a) How many two digit numbers are there in all?
b) If we choose one number from the two digit numbers, what is the probability that the sum of the digits of that number will be `10 ?`

Find the number of two digit even numbers?

A man is asked to say a 3 digit number.What is the probability that the last two digits be ’0’?

How many 4 digit numbers are there with no digit repeated?

One is asked to say a two-digit number.What is the probability of both digits being the same?

One is asked to say a two-digit number.What is the probability of the first digit being smaller?

One is asked to say a three digit number What is the probability that a) all the digits of the number are same? b) The number is miultiple of 6 .

One is asked to say a two-digit number.What is the probability of the first digit being larger?

One is asked to say a three digit number a) What is the probability of three digits being same?

Each two - digit number is written on a paper slip and these are all put in a box What is the probability that the product of the digits of a number drawn is ia prime number? What if three - digits numbers are used Instead?

One is asked to say a two digit number.Whatis the probability of being the number not a perfect square?