Math, asked by parulnagar755, 10 months ago

Find the sum of 10 terms of ap 2, 5, 8, 11.... ​

Answers

Answered by chauhanaaditya43
12

Answer:

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Answered by ItzRuchika
20

Answer:-

  • Sum of 10 terms of AP 2, 5, 8, 11..... is 155 .

Step-by-step explanation:-

  • We have,

AP = 2, 5, 8, 11.......

Here, a = 2 & d = 5-2=3

  • We know that,

  • S(n) = n/2 {2a + (n-1)d}

Now,

  • S(10) = 10/2 { 2×2 + (10 - 1) × 3}

= 5 × (4 + 9 ×3)

= 5 × (4 +27)

= 5 × 31

= 155

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