Question

what is the 99 th term of the series 2 + 7 +14 + 23 + 34 + .......

Answer 1

We need to apply nth term of the sequence,

n² + 2n - 1

We need to find 99th term,
n² + 2n - 1

Now, Substituting the values in the given formula,

= (99)² + 2×(99) -1

= 9801 + 198 - 1

= 9998.


Hope it helps you!