Question

Give the answer, which of the following are composite numbers? 4 9 15 3 5

Answer 1

Given

we are given numbers 4, 9, 15, 3, 5

Required

we need to find which of the above numbers are composite.

Step-by-step explanation

Here

`\begin{gathered} 4=2*2 \\ 9=3*3 \\ 15=3*5 \\ 3=3*1 \\ 5=5*1 \end{gathered}`

clearly 4, 9, 15 have factors other than 1 and itself.

so 4, 9 and 15 are composite numbers