A number is randomly selected from natural numbers not exceeding 999. The probability that the sum of the digits in its number is 9, is

Two numbers are selected from first 40 natural numbers. The probability that the sum of two number is odd is:

A book has 999 pages. If a page is opened at random the probability that the sum of the digits in its number is 9, is

A number x is selected from the numbers 1,2,3 and then a second number y is randomly selected from the numbers 1,4,9. What is the probability that the product xy of the two numbers will be less than 9?

A number x is selected from the numbers 1,2,3 and then a second number y is randomly selected from the numbers 1,4,9. What is the probability that the product xy of the two numbers will be less than 9?

A 4 digit number is randomly picked from all the 4 digit numbers, then the probability that the product of its digit is divisible by 3 is :

A 4 digit number is randomly picked from all the 4 digit numbers, then the probability that the product of its digit is divisible by 3 is :

If two numbers are selected randomly from 20 consecutive natural numbers, find the probability that the sum of the two numbers is (i) an even number (ii) an odd number.

If a number is a selected at random from first 100 natural numbers then the probabilitiy that the number is a two digited number with atleast one even digit either at the beginning or ending is