Find the total number of `n` -digit number `(n >1)` having property that no two consecutive digits are same.

Total number of six-digit numbers that can be formed having the property that every succeeding digit is greater than the preceding digit is equal to a. ^9C_3 b. ^10 C_3 c. ^9p_3 d. ^10 p_3

The number of five digit telephone numbers having at least one of their digits repeated is

The number of three-digit numbers having only two consecutive digit identical N , then the value of (N//2)^(1//2) is _______.

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

Find the number of n digit numbers, which contain the digits 2 and 7, but not the digits 0, 1, 8, 9.

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

Find the total number of nine-digit numbers that can be formed using the digits 2, 2, 3, 3, 5, 5, 8, 8, 8 so that the odd digit occupy the even places.