A man speaks truth 6 out of 9 times. What is the probability that he would not narrate an incident correctly.

The record of a weather station shows that out of the past 250 consecutive days, its weather forecasts were correct 175 times. (i) What is the probability that on a given day it was correct? (ii) What is the probability that it was not correct on a given day?

According to a meteorological report for 300 consecutive days in a year , its weather forecasts were correct 180 times . Out of these days , one day is chosen at random . What is the probability that the weather forecast was not correct on that day ?

In a cricket match, a batswoman hits a boundary 6 times out of 30 balls she plays. Find the probability that she did not hit a boundary.

In answering a question in a multiple choice test a student either knows the answer or guesses. Let 3/4 be the probability that he knows the answer and 1/4 be the probability that he guesses. Assuming that a student who guesses at the answer will be correct with probability 1/4 . What is the probability that a student knows the answer, given that he answered it correctly ?

In a cricket match, a batsman hits a boundary 10 times out of 50 balls he plays. Find the probability that the does not hit a boundary.

If a dice is thrown 3 times in succession. What is the probability that all throws shows 6?

A problem is given to three children, whose chances of solving it are 1/3 , 1/5 and 1/6 , what is the probability that : Only one of them solves it correctly

A game of chance consists of spining an arrow which comes to rest pointing at one of the numbers 1,2,3,4,5,6,7,8, and these are equally likely outocomes. What is the probability that it will point at (i) 8 ? (ii) an odd number ? (iii) a number greater than 2 ? (iv) a number less than 9 ?