Which among the following is not correctly placed?
9, 28, 65, 126, 218
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 218
Each term is one more than a cube, the cubes of 2, 3, 4, 5 and 6 in turn.
\(2^3+1=9\)
\(3^3+1=28\)
\(4^3+1=65\)
\(5^3+1=126\)
\(6^3+1=217\), so 218 is wrong; it should be 217