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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
Q. Three coins are tossed simultaneously 200 times with the the following frequencies of different outcomes:
3 heads 23
2 heads 72
1 head 77
no head 28
How to find probability of getting:
1. three heads 2. at least two heads 3. two heads and one tail
how to write a maths project for icse class ix on planning a delivery route for a postman
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..
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 .
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.
What is the probability of getting 53 Sundays in a leap year and in a non leap year?
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?
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
Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes:
3 heads 23
2 heads 72
1 head 77
no heads 28
find the probability of getting
( i) 3 heads
(ii) at least 2 heads
(iii) two heads and one tail
3 of the 6 vertices of a regular hexagon are chosen at random find the probability that the triangle with three vertices is equilateral.
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.
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
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.
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.
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.
which of the following cannot br empirical probability of an event?
A number x is chosen at random from the numbers -3.-2,-1,0,1,2,3. Find The probability that [x]<2
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 20th Thursday.
two dice are thrown simuntaneously 500 times . each time the sum of two numbers appearing on them is not written
find the PROBABILITY of getting a sum
1)more than 10
2)between 8 and 12
Q-If the probability of winning a game is 0.4 what is theprobabilityof losing it ?
If x is the mean of n observations x1,x2,x3......xn.Then sigma ni=1 (x1-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
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 ?
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 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:
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.
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
outcome 1 2 3 4 5 6
Frequency 179 150 157 149 175 190
A die is thrown once again. Find the probability of outcome "greater than 3" ?
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