Question

The nth term of an A.P. is 6n + 4. The sum of its first 2 terms is ______.

Options

• 16

• 20

• 26

• None of these

Answer 1

The nth term of an A.P. is 6n + 4. The sum of its first 2 terms is 26.

Explanation:

Given T_n = 6n + 4

∴ T₁ = 6 × 1 + 4

= 6 + 4

= 10

T₂ = 6 × 2 + 4

= 12 + 4

= 16

∴ S₂ = T₁ + T₂

= 10 + 16

= 26