Question

In the following question, the wrong term and its substitution by the correct term are indicated as a pair in the four options given below. Identify the correct pair.

$8,12,18,36,72,108,216$

• A. $(8,6)$
• B. $(18,24)$
• C. $(36,27)$
• D. $(216,162)$

Answer 1

Answer: (B)

$(18,24)$

$12=\frac{3}{2}\times 8$
$18=\frac{3}{2}\times 12,(24=2\times 12)$
$36=2\times 18,(36=\frac{3}{2}\times 24)$
$72=2\times 36$
$108=\frac{3}{2}\times 72$
$216=2\times 108$
The pattern is obtained if $18$ is substituted by $24.$