What numbers between 11 and 19 are composite numbers?

Question

catalogna2lv · Accepted Answer

Step 1
Compossite numbers are those numbers who have factors other than 1 and themselves.
As even numbers are multiples of 2, between 11 and 19
we have 12, 14, 16, 18 as composite numbers
among odd numbers 13, 15, 17
only 15 has factors other than 1 and itself.
Hence, between 11 and 19 we have 12, 14, 15, 16, 18 as composite numbers.

Brom76g · Accepted Answer

Step 1Composite Numbers are those numbers which have factors other than one and itselfExample : 4 is a composite number as it has factors 1, 2 and 4. (In fact it is the smallest composite number.)Between 11 and 19, there are 7 numbers:12, 13, 14, 15, 16, 17, 18Here 11 is not composite, instead it is &#039; (those numbers which have only 1 and themselves as factors)[11 has only two factors, 1 and 11]12 is composite; as 12 has factors 1, 2, 3, 4, 6 and 1213 is again &#039;, having only 1 and 13 itself as factors14 has 1, 2, 7 and 1415 has 1, 3, 5 and 1516 has 1, 2, 4, 8 and 16These are all composite numbers.17 is &#039;18 is composite.

What numbers between 11 and 19 are composite numbers?

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