Dialing a telephone number an old man forgets the last two digits remembering only that these are different dialed at random. The probability that the number is dialed correctly is

Dialling a telephone number an old man forgets the last two digits remembering only that these are different dialled at random. The probability that the number is dialled correctly is 1//45 b. 1//90 c. 1//100 d. none of these

A two digit number is formed with the digits 2,5,9 (repetition is allowed). Find the probability that the number is divisible by 2 or 5 .

A two digit number is formed with the digits , 2,5,9 ( repetition is allowed ) . Find the probability that the number is divisible by 2.

Given that the two numbers appearing on throwing two dice are different. Find the probability of the event 'the sum of numbers on the dice is 4.

Find the last two digits of the number 7^(400)

Find the last two digits of the number 3^(600) .

A two digit number is to be formed from the digits 0,1,2,3,4. Repetition of the digit is allowed . Find the probability that the number so formed is a - prime number

A two digit number is to be formed from the digits 0,1,2,3,4. Repetition of the digit is allowed . Find the probability that the number so formed is a - multiple of 4

Find the last two digits in the number 11^(100)