Question

Kai wrote the number 85 on the board is 85 prime or coposite ? Explain

Answer 1

Composite

Explanation:

To know if the number is a prime or composite, you must first know the definitions of both words.

Prime: Prime means that the number only has factors of 1 and itself. An example can be 13, in which it only has factors of 1 and 13.

(1 * 13 = 13).

Composite: Composite means that the number has more factors then just 1 and itself. An example can be 20, in which the factors are 1, 2, 4, 5, 10, 20.

(1 * 20 = 20).

(2 * 10 = 20).

(4 * 5 = 20).

Now, the question asks 85. 85 is a composite number, for it has more than just 1 & 85 as factors. The factors will be listed below:

(1 * 85 = 85)

(5 * 17 = 85)

1, 5, 17, 85 are your factors.

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Answer 2

compositie

Explanation:

A prime number can only be divided by itself and 1

Can we factor 85

85/5 = 17

85 = 5*17

This number is composite since it is divisible by 5

The factors of 85 are 1,5,17,85