Question

Which of the following is not divisible by 2?

• A. $25\times 6$
• B. $23\times 8$
• C. $26\times 5$
• D. $27\times 7$

Answer 1

The correct option is D $27\times 7$

Calculate the product for each option:
$25\times 6$ = $150$
$23\times 8$ = $184$
$26\times 5$ = $130$
$27\times 7$ = $189$

All numbers that end with 0,2,4,6 or 8 are divisible by 2.

Of the given options, only 189 is not following this criteria, hence $27\times 7=189$ is not divisible by 2.