Question

How many ${}^{\prime }{7}^{\prime }$s are there in the following series which are not immediately followed by $3$ but immediately preceded by $8?$
$8987622632697328727787237794$

• A. $4$
• B. $3$
• C. $2$
• D. $0$
• E. None of these

Answer 1

The correct option is B $3$

$89\left(87\right)62263269732\left(87\right)277\left(87\right)237794$
Answer is three (option B).