18) Find the sum of 5 + 8 + 11 +
upto 24 terms using the formula.​

1 thought on “18) Find the sum of 5 + 8 + 11 +<br />upto 24 terms using the formula.​”

1. Answer:

   Here a= 5,

   d = (8-5) = 3 and

   n = 24.

   =12×(10+69)=948.

   Hence, the sum of first 24 terms of the given AP is 948.

   HOPE IT HELPS YOU

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