Nine numbers `1,2,3.........9` are put into a `3times3` array, so that each number occur exactly once. Find the probability that the sum of the numbers in atleast one horizontal row is greater than 21.

Nine numbers 1,2,3,.....9 are arranged in a rectangular array of matrix of order 3, So that each number occurs exactly once. Then probability that the sum of the numbers in atleast one horizontal row is greater than 21, is m:n, then (m+n) is

A die is thrown once.Find the probability of getting a number less than 3.

A die is thrown once. Find the probability that number turns up on the upper face is greater than 2 and less than 5.

A die is thrown once. Find the probability that number turns up on the upper face is greater than 2 and less than 5.

A die is thrown once. Find the probability of getting (A) a prime number greater than 3 (B) an even prime number greater than 3.

Number of three digit number with atleast one 3 and at least one 2 is

The number of integers less than -3 but greater than -9 is

A die is thrown.Find the probability of getting: a number greater than or equal to 3

In one throw of a dice, find the probability of getting: (i) an even number (ii) a multile of 3 (iii) a number greater than 4

The digits 1,2,3,.....9 are written in random order to form a nine digit number.Find the probability that this number is divisible by 11 .