How many different numbers of two digits can be formed with the digits 1, 2, 3, 4, 5, 6; no digit being repeated?

How many different numbers of two digits can be formed with the digits 1, 2, 3, 4, 5, 6; no digit being repeated?

A 40

B 30

C 35

D 45

Solution

Correct Answer: Option B

different numbers of two digits can be formed = 6 × 5 = 30