Question

If tn is 2n+3 find t7 t30 and s10​

Answer 1

Answer: t₇ = 17 t₃₀ = 63 S₁₀ = 140

Explanation:

t₇ = 2(7) + 3

= 14 + 3

= 17

t₃₀ = 2(30) + 3

= 60 + 3

= 63

S₁₀ = (t₁ + t₁₀)/2 × 10

= (5 + 23)/2 × 10

= 28/2 10

= 14 × 10

= 140