Find the sum of first 10 terms of the AP: 8, 10, 12..
Answers
Answered by
0
a1 = 8
a2 = 10
d = a2 - a1 = 10 - 8 = 2
Sn = n/2[2a + (n-1)d]
= 10/2 [2(8) + 9(2)]
= 5(16 + 18)
= 5 × 34
= 170
∴ Sum of first 10 terms of the AP = 170
Answered by
2
Answer in attachment✅✅
Attachments:
Similar questions