Question

explain why 15 into 7 + 7 is an composite number

Answer 1

this is because 15 x 14 can be expressed as 5 x 3 x 2 x 7 {ie as a product of more than two primes}. Thus it is a composite number 

Answer 2

HI FRIEND,

HERE IS YOUR ANSWER,

SO, ACOMPOSITE NUMBERS ARE THOSE WHO CAN ONLY BE DIVISIBLE BY ITSELF OR BY 1 ....

AND,

15*7+7

105+7

112 , AND IT CAN BE DIVISIBLE BY 2 , 4 , 8 ETC. AND THESE ARE COMPOSITE NUMBERS...

#HOPE YOU UNDERSTAND....