Question

Exercise : 3.2
P. Check if the following number
Prime
a: 18 and 33
b:28and42 c:11and58. 16and26​

Answer 1

Answer:

a: 18 and 33, both can be divided by 3, hence they are composite numbers.

b: 28 and 42, both can be divided by 2, hence they are composite numbers.

c: 11 is a prime number because it has only two factors (1 and 11); 58 is not a prime number because it is divisible by 2.

d: Both 16 and 26 can be divided by 2, hence they are composite numbers.

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