How many three-digit even numbers can be formed using the digits 1,2,3,4 and 5 when repetition of digits is not allowed ?

Step-by-step solution

Given digits are 1,2,3,4 and 5. Total number of 3-digit even numbers = ^4 C ₂ ^2 C ₁ . = 3 4 2 2=12 .