Question

What is a 3 digit even number

Answer 1

its a 3 digit number divisible by 2

Answer 2

3 digit numbers number means we have to put 0-9 digit at 3 places....ABC
at the position of A (first place) we can put any digit 1-9 not 0, otherwise it will not a 3 digit number, so by 9 ways


at the position of B (second place) we can put 0-9 i.e by 10 ways...
at the position of C (third place) we can put 0,2,4,6 or 8 i.e by 5 ways...
so, total no. of digit = 9*10*5 = 450

Total no. of three digit even numbers =450

Answer 3

Hope that helps :)

Answer 4

copied and pasted from here :
http://www.algebra.com/algebra/homework/Permutations/Permutations.faq.question.350843.html

Answer 5

Correct this helped me, so thought it would help the same :)