Question

How many pairs of successive numbers have a difference of $2$ in the following sequence?

$6,4,1,2,2,8,7,4,2,7,5,3,8,6,2,1,7,0,4,1,3,2,8,6$

Answer 1

Find the required number of pairs.

The given numbers are $6,4,1,2,2,8,7,4,2,7,5,3,8,6,2,1,7,0,4,1,3,2,8,6$.

So from the successive numbers pairs having difference $2$ are$\left(6,4\right),(7,5),\left(4,2\right),\left(5,3\right),\left(8,6\right),\left(1,3\right),\left(8,6\right)$.

Hence the number of pairs having a difference of two is $7$.