The number of 5-digit numbers in which no two consecutive digits are identical, is

The number of three-digit numbers having only two consecutive digits identical is

The number of three digit numbers having only two consecutive digits identical is

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

The number of 'n' digit numbers such that no two consecutive digits are same is

A five-digit number is written down at random. The probability that the number is divisible by 5 and no two consecutive digits are Identical is a. 1/5 b. 1/5(9/(10))^3 c. (3/5)^4 d. none of these

The number of two digit numbers which are prime :