Question

Which of the given alternatives will replace the ?

$1,4,18,48,?$

• A. $100$
• B. $78$
• C. $92$
• D. $112$

Answer 1

The correct option is A $100$

This series follows a pattern :

$1\times 1\times 1=1$,

$1\times 2\times 2=4$,

$2\times 3\times 3=18$,

$3\times 4\times 4=48$,

$4\times 5\times 5=100$.

Hence, 100 replaces the question mark '?'.