Question

Write which number in the given sequence replaces the question mark (?)

$197,171,147,125,105,?$

• A. $71$
• B. $87$
• C. $97$
• D. $101$

Answer 1

The correct option is B $87$

It follow a pattern :

$197-26=171$,

$171-24=147$,

$147-22=125$,

$125-20=105$

Similarly, $105-18=87$.

Hence, $87$ replaces question mark.