Question

For an A.P., if a = 7 and d = 2.5 then t₁₂ = ?

पर्याय

• 37.5

• 34.5

• 28.2

• 44.5

Answer 1

34.5

Explanation:

Given: a = 7 and d = 2.5

t₁₂ = a + (12 – 1)d

= 7 + (12 – 1) (2.5)

= 7 + (11) (2.5)

= 7 + 27.5

= 34.5

Thus, the value of t₁₂ is 34.5.