Question

How many $7^{\prime }s$ are there which are immediately followed by 4 but not immediately preceded by even number ?
$932174269746132874138325674395280187463$

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

Answer: (B)

$2$

$932\underset{–}{1}7\underset{–}{4}26\underset{–}{9}7\underset{–}{4}6132874138325674395280187463$
the number 7 inside the box is immediately followed by 4but not immediately preceded by an even number.
Therefore, two such7's are there.