Question

a student can select one of 6 different math book one of 3 different chemistry book & one of 4 different science book.in how many different ways students can select book of math chemistry & science.

Answer 1

Hello Mortals

Number of math books = 6
He can select math book in 6 different ways.

Likewise, he can select science book in 4 different ways and chemistry book in 3 different wags.

Now, in how many ways he can select math, science and chemistry
= ( 6 * 4 * 3)
= 72.

Answer 2

6c1= for math

3c1=for chemistry

4c1= for science

therefore total

6c1 *3c1*4c1=6*3*4

=72 ways dude

hope it helps