Question

The roster form of A = {Prime numbers between 10 and 20} is ___.

• A. A = {11, 13, 15, 17, 19}
• B. A = {11, 13, 17, 19}
• C. A = {11, 13, 19}
• D. A = {11, 13, 17}

Answer 1

The correct option is B

A = {11, 13, 17, 19}

Given the set A = {Prime numbers between 10 and 20}.
The prime numbers between 10 and 20 are 11, 13, 17 and 19.
Thus, the roster form of set A is {11, 13, 17, 19}.