How-many-3-digit-numbers-divisible-by-5-can-be-made-using-the-numbers-7-8-9-2-1-0-without-repetition-

Question Number 125182 by Mammadli last updated on 08/Dec/20

H o w m a n y 3 - d i g i t n u m b e r s d i v i s i b l e b y 5 c a n b e m a d e u s i n g t h e n u m b e r s 7, 8, 9, 2, 1, 0 w i t h o u t r e p e t i t i o n ?

Answered by bemath last updated on 08/Dec/20

A B 0 \Rightarrow P_{2}^{5} = \frac{5!}{3!} = 20 .

Facebook Tweet Pin