Question

In the following series, how many pairs of consecutive numbers have an absolute difference of $2$?
$64122742153862171413286$

• A. Three
• B. Four
• C. Five
• D. Six

Answer 1

Answer: (C)

Five

There are five pairs which satisfy the given condition that is the difference of numbers should be two.

$(6,4)$.$(4,2)$, $(5,3)$, $(8,6)$ and $(1,3)$ for the series:

$6,4,1,2,2,7,4,2,1,5,3,8,6,2,1,7,1,4,1,3,2,8,6$