1. There are 5 red marbles, 7 green marbles, 4 black marbles, and 8 blue marbles in a bag. Suppose you select one marble at random. Find each probability.

1. P(red) 2. P(orange) 3. P(blue)

4. P(not green) 5. P(green or black) 6. P(not yellow)

Question-A maths teacher tabulated the marks secured by 35 students of 8th class. The average of their marks was 72. If the marks obtained by Ashima was written as 36 instead of 86 then compute the correct average marks upto two decimals.

Solve the below Question:Reena tosses a coin four times. The probability that she gets at least as many heads as tails is ____.

1. There are 5 red marbles, 7 green marbles, 4 black marbles, and 8 blue marbles in a bag. Suppose you select one marble at random. Find each probability.

1. P(red) 2. P(orange) 3. P(blue)

4. P(not green) 5. P(green or black) 6. P(not yellow)

Solve this :6. Three coins are tossed 6 times and outcomes are observed as HHT, HTT, THT, HHH, THH, TTT.

Prepare a frequency table on the basis of number of Heads and hence calculate the relative frequency and percentage chance of occurance.

(a) A man's monthly salary is Rs 2400 and his expenses on travel are Rs 250. Find the central angle of the sector representing travel expenses in pie - chart.

(b) If 35% of the people residing in a locality are Sikhs then find the central angle of the sector representing the Sikh community in the pie - chart.

If the mean of the following data is 5 them , find the value of

_{i}_{i}Q.4. Three coins are tossed 6 times and outcomes are observed as (HHT), (HTT), (THT), (TTT), (THH), (HHH). Prepare a frequency table on the basis of numbers of heads and hence calculate the percentage chance of occurrence.

i)a red card ii)a 10 of black red

Q.11. Mohit is thinking of two numbers. Their greatest common factor is 6. Their least common multiple is 36. One of the numbers is 12. What is the other number?

(A) 18

(B) 16

(C) 6

(D) 24