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Syllabus

Prove that a cyclic parallelogram is a rectangle.

a coin is tossed 500 times and head appeared 300 times. find the sum of the probabaility of getting a head a nd the probability of getting a tail .

find the mean of first 10 prime numbers

Two coins are tossed simultaneously . Find the probability of getting

(a) two heads

(b) at least one head

(c) no head

(d) at most one head

Every letter of the English alphabet is coded into numbers like A stands for 1, B for 2 and so on.. Decode the letters used in the phrase RESPECT GIVEN IS RESPECT EARNED. Find the probability of each letter used (only once) to form the phrase from the total sum of all the 27 decoded letters

Differentiate between exhaustive events and sample space.

How to make a sample space for an experiment.

The king, queen and jack of clubs are removed from a deck of 52 playing cards and then well shuffled. One card is selected from the remaining cards. Find the probability of getting

1. A heart

2. A king

3. A club

4The '10' of hearts

If a family is chosen at random compute the probability that it has

1. 1girl

2. 1 boy

Q. Three coins are tossed simultaneously 200 times with the the following frequencies of different outcomes:OutcomeFrequency3 heads 232 heads 721 head 77no head 28How to find probability of getting:1. three heads 2. at least two heads 3. two heads and one tailFind the probability of getting:

(a) an even number

(b) an odd number greater than 1. getting 1

Distance (in km) 0 - 5 5 - 10 10 - 15 15 - 20 20 - 25 25 - 30 30 - 35 No of engineers 5 11 11 9 1 1 2

Find the probability that an engineer selected at random lives at a distance of:-

(i) 10 – 15 km (event E1) (ii) more than 35 km (event E2) (iii) less than 10 km (event E3) (iv) upto 35 km

answers in step please

how to write a maths project for icse class ix on planning a delivery route for a postman

(a) p (A)

(b) p (B)

(c) p (C)

(d) p (A)+ p (B)+p(C)

(e) p (not c)

(f) p (neither A nor C)

(g) p (bot B and C)

in a cricket match a batsman hit a boundary 6 times out of 30 balls she plays. find the probablity that she did not hit boundary?

give me chapter wise weightage of all the chapter in maths of sa2 exam..

BOOKS ARE PACKED IN PILES EACH CONTAINING 20 BOOKS. THIRTY FIVE PILES WERE EXAMINED FOR DEFECTIVE BOOKS AND THE RESULTS ARE GIVEN IN THE FOLLOWING TABLE ....NO. OF DEFECTIVE BOOKS ( 0 ) ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( ABOVE 6 )

FREQUENCY ( 400 ) ( 180 ) ( 48 ) ( 41 ) ( 18 ) ( 8 ) ( 3 ) ( 2 )

ONE PILE WAS SELECTED AT RANDOM. WHAT IS THE PROBABILITY THAT IT HAS:

no DEFECTIVE BOOKSMORE THAN 0 BUT LESS THAN 4 DEFECTIVE BOOKSMORE THAN 4 DEFECTIVE BOOKS.FREQUENCY IS WRITTEN JUST BELOW NO. OF DEFECTIVE BOOKS IN THE BRACKETS( BOARD QUESTION OF 2015)

a class consist of 50 students out of which 30 are girls . the mean of marks scored by girls in a test is 73 & that of the boys is 71 . find the mean score of whole class .

outcome= 1 2 3 4 5 6

frequency=89 75 78 73 88 97

find the probability of having an outcome:

1. number > 4

2. number< 4

3. number between 1 and 3

A piggy bank contains hundred 50 p coins,fifty 1 rupee coins,twenty 2 rupee coins &ten 5 rupee coins.If it is equally likely that one of the coins will fall out when the bank is turned upside down,what is the probability that the coin: 1)will be a 50p coin? 2)will not be a 5 rupee coin? 3)which mathematical concept is used in above problem? 4)what is its value? ( pls .... i need the answer today)

If a person is selected at random, find the probability that the person is :

The probability of guessing the correct answer to a certain question is X/2 (X by 2). If probabiliy of not guessing the correct answer is 2/3 (2 by 3), then find X.

Please answer the question urgently. My exam is on 20th Thursday.

Thanks

What is the probability of getting 53 Sundays in a leap year and in a non leap year?

A code is drawn at random to allot an employee. The probability that the code have at least two digit is:

Q7. Two dice are thrown simultaneously 500 times. Each time the sum of two numbers appearing on their tops is noted and recorded as given ahead table: Sum 2 3 4 5 6 7 8 9 10 11 12 Frequency 14 30 42 55 72 75 70 53 46 28 15 If the dice are thrown once more, What is the probability of getting a sum i) 3? ii) More than 10? iii) Less than or equal to 5? iv) Between 8 and 12?

Scores 20 - 29 30 - 39 40 - 49 50 - 59 60 - 69 70 - 79 80 - 89 90 - 99 No of matches 1 1 8 13 20 22 12 3

What is the probability that the batsman will score (in the next match)

(i) atleast 70 runs (ii) less than 50 runs (iii) 40 to 69 runs (iv) at most 59 runs

please help me n steps

Two dice is thrown simultaneously . The probability of getting a multiple of 2 on one die and a multiple of 3 on the other is .

(a) 5/36 (b)5/12 (c)11/36 (d) 1/12

If a school is selected at random, find the probability that the school is having

(i) minimum fee

(ii) maximum fee

(iii) fee of atmost Rs 1000

(iv) fee between Rs 1000 and Rs 1500

Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes:3 heads 232 heads 721 head 77no heads 28find the probability of getting( i) 3 heads(ii) at least 2 heads

(iii) two heads and one tail(i) Less than 10 kg of flour

(ii) Exactly 10 kg of flour

3 of the 6 vertices of a regular hexagon are chosen at random find the probability that the triangle with three vertices is equilateral.

If a student is chosen at random find the probability that is a student of either commerce or humanities stream.

1500 families with 2 children were selected randomly and the following data were recorded:

number of girls in a family: 0 1 2

frequency: 211 814 475

if a family is chosen at random,compute the probability that it has:

1. no girl.

2. 1 girl.

3. 2 girls.

4. at most one girl.

5. more girls than boys.

Q) A box contains 90 cards which are numbered from 1 to 90.If one card is drawn at random from the box.Find the probablity that it is .?

1) A two digit number.

2) A perefect square number.

3) A number divisible by 3.

4) A number divisible by 5.

5) A number divisible by 3or5

6) a number dividible by 3and5

chech whether 7/6 can be an empirical probability or not. give reasons.

Day No. of T.V sets

Mon 300

Tue 400

Wed 150

Thu 250

Fri 100

Sat 350

Sun 200

If a T.V set is selected at random, find the probability that it is produced.

1. on a day having maximum production

2. on a day having minimum production

3. On saturday

Eleven bags of wheat flour, each marked 5 kg, actually contained the following weights of flour (in kg):

4.97 5.05 5.08 5.03 5.00 5.06 5.08 4.98 5.04 5.07 5.00

Find the probability that any of these bags chosen at random contains more than 5 kg of flour.

9. From a pack of cards, a card is drawn at random. Find the probability of getting a red card.

(i) An even number as the sum.

(ii) The sum as a prime number.

(iii) A total of at least 10.

(iv) A doublet of even number.

The probabilities of a student getting grade A,B,C AND D are0.2,0.3,0.15,0.35 respectively. then the probability that a student gets at least C grade is

a)0.65 b)0.15 c)0.50 d)0.35

Lead spheres of diameter 6 cm each are dropped into a cylinderical beaker containing some water and are fully submerged. If the diameter of the beaker is 18 cm and water level rises up to 40 cm, find the number of lead spheres dropped into water.

Weekly wages (in Rs) 325 - 350 350 - 375 375 - 400 400 - 425 425 – 450 No of workers 0 45 75 60 40

Find the probability that a worker selected at random earns: - (i) Rs 400 or more (ii) Rs 375 or more but less than Rs 425 (iii) Upto Rs 400 (iv) at least Rs 375

answers please in steps

A bag contains 4 white balls and some red balls. If the probability of drawing a white ball from the bag is 2/5, find the number of red balls in the bag.

Find the probability of getting either 1 or 3?

9. In a cricket match, a batsman hits a boundary 6 times out of 36 balls he plays. Find the probability that he did not hit a boundary?

17 cards numbered 1,2,3........17 are put in a box and mixed thoroughly. One person draws as ard from the box. Find the probability that a number on the card is (i) odd (ii) a prime

(m/n)x^2 + n/m = 1 - 2x

Probability of an event can be

A box contains 50 bolts and 150 nuts. On checking the box ,it was found that half of the bolts and half of the nuts are rusted. If one item is chosen at random, find the probability that it is rusted.

Find Probability that female chosen at random is from age groups.

i) a)(13-23)years & likes pears

b)above 35 years & likes medimix

c)(5-12) years & likes Dove.

NOTE:PLEASE DON'T PROVIDE LINKS...which of the following cannot br empirical probability of an event?

a] 4/5

b] 1

c] 0

d] 5/4

Outcome 1 2 3 4 5 6

Frequency 20 15 20 15 20 10

a) What is the probability that we get an even number in a trial ?

b) What is the probability of getting a number less than 3 ?

c) What is the probability of getting a prime number ?

A number x is chosen at random from the numbers -3.-2,-1,0,1,2,3. Find The probability that [x]<2

blood group : A B AB O

number of students : 12 9 7 6

if a student is chosen at random ,find the probability that he or she is a universal donar (O blood group)

A die is thrown 100 times.If the probability of getting an even number is 2/5.how many times an odd number is obtained?

9am - 11am - 175

11am - 1pm - 125

1pm - 3pm - 225

3pm - 5pm - 200

5pm - 7pm - 120

The above table shows the number of people visiting the Good-living pavilion in a trade fair during different time of the day.

Find the probablity that the randomly chosen person visited the pavilion.

1. after 1pm but before 5pm

2. between 9am to 1pm

3. after 5pm

4. between 3pm and 5pm.

Please answer this question urgently. My exam is on 20

^{th}Thursday.Thanks

two dice are thrown simuntaneously 500 times . each time the sum of two numbers appearing on them is not written

sum frequency

2 14

3 30

4 42

5 55

6 72

7 75

8 70

9 53

10 46

11 28

12 15

find the PROBABILITY of getting a sum

1)more than 10

2)between 8 and 12

(i)A prime number less than 30?

(ii)A multiple of 5 and 7?

(iii)A multiple of 5 or 7?

2 ) can the experimental probability of an event be greater than 1? If not why?

3 ) can the experimental probability of an event be zero? If not why?

Q-If the probability of winning a game is 0.4 what is theprobabilityof losing it ?

(a) $1-\frac{1}{2\left(\sqrt{3}\right)}$ (b) $1-\frac{\mathrm{\pi}}{3\left(\sqrt{3}\right)}$ (c) $1-\frac{\mathrm{\pi}}{2\sqrt{3}}$ (d) $1-\frac{2\mathrm{\pi}}{3\sqrt{3}}$

Find the probability that a selected person is a woman. Plz answer

If x is the mean of n observations x

_{1},x_{2},x_{3}......x_{n}.Then sigma^{n}_{i=1}(x_{1}-x) is ??A RECENT SURVEY FOUND THAT THE AGES OF WORKERS IN FACTORY ARE DISTRJBUTED AS

AGE IN YRS 20-29,30-39.40-49,50-59,60 AND ABOVE

NO.OF WORKERS 38,27,86,46,3

IF A PERSON IS SELECTED AT RANDOM FIND THE PROBABILITY THAT THE PERSON IS

1. 40 YRS OR MORE

2.UNDER 40YRS

3.UNDER 60 BUT NOT OVER 39YRS

A and B are the only two outcomes of an event.Probability of P(A)=0.72,then what will be the probability P(B) and why?

five cards--the ten,jack,queen,king and ace of diamonds, are well-shuffled with their face down.One card i picked up with random.1)what is the probablity that the card is the queen? 2)if the queen is drawn and put aside, what is the probablity that the secondncard is up is (a) an ace? (b) a queen ?

type 1 -trekking

Type 2 - trekking and mountain climbing

type 3 -trekking and mountain climbing and rapling

Type 4 - trekking and rapling and rafting

in a hurdle race, a player has to cross 10 hurdles. the probability that he will clear each hurdle is 5/6. what is the probability that he will knock down fewer than 2 hurdle????

(a) Probability of an event always lies between 0.05 and 1.

(b) P(E)= Total number of trials / Number of trials in which E has happened

a coin is tossed 1000 times with the following frequencies:

Head:455, Tail: 545

Compute The Probability for each event

The percentage of marks obtained by a student in examination are given below:

Examination Subjects

I

II

III

IV

V

% Marks

58%

64%

76%

62%

85%

Find the probability that the student gets –

i) a first class in a subject i.e. at least 60% marks.

ii) A distinction in a subject i.e. at least 75% or above.

iii) Marks between 70% and 80% in a subject.

No. of defective bulbs Frequency

0 400

1 180

2 48

3 41

4 18

5 8

6 3

more than 6 2

One cartoon is selected at random. What is the probability that it has:

a)no defective bulbs.

b)defective bulbs from 2 to 6.

c)defectve bulbs less than 4.

in a kitchen, there are 54 utensils consisting of bowl, plates and glasses. the ratio of bowl , plate glasses is 3:2:1. a utensil is picked at random.find the probability that:-

1. it is a plate.

2. it is not a bowl.

;

From numbers 3, 5, 5, 7, 7, 7, 9, 9, 9, 9 one number is selected at random. The probability

A die is thrown 1000 times with frequency of outcome 1,2,3,4,5, and 6 as given below

outcome1 2 3 4 5 6Frequency 179 150 157 149 175 190A die is thrown once again. Find the probability of outcome "greater than 3" ?