# Probability

## In question no 14 the probability of slip of even or odd number.

A.1?2 B.0 C.1 D.2 or 3

## There are 40 students in a class of which 25 are boys and 15 are girls the teacher Sir Abid writes the name of each student on slip of papers. What is the probability that the name on the slip is of a boy.

A.5?8 B.3?8 C.3?5 D.0

## What is the probability of selecting a prime number from a list of natural number from 1 —-33 both inclusive if every number has equal chance of being selected.

A.1?8 B.1?33 C.15?33 D.1?3

## The probability that an egg will be broken during delivery from a supermarket to KIPS is 1/200. How many broken eggs would be there out of 800 eggs?

A.50 B.30 C.10 D.4

## In a light bulb factory it is found that the probability of a bulb being defective is 0.12 estimate how many defective bulbs there would be in 1000 bulb.

A.12 B.120 C.102 D.1000

## When a dice is rolled the probability of a number which is even and greater than 4.

A.0 B.1?4 C.1?6 D.1?9

## A bag containing 4 white balls 3 black and 5 blue balls. What is the probability of getting blue or black ball?

A.1?6 B.2?3 C.5?12 D.3?5

## A bag contains 30 balls the probability of drawing a pink ball and white ball are 1/5 and 1/6 resp. What is the probability of black balls?

A.8?15 B.1?2 C.17?30 D.19?30

## A boy buys crates of drink at Rs. 75 per crate and sells each for Rs. 90. What is the expected profit per crate, if probability of sale is 5/6?

A.12.5 B.15 C.17.5 D.20

## In above question what is the expected loss to the poor boy if it is not sold or returned back?

A.20 B.17.5 C.15 D.12.5