Question

Find sum of 24thvterns 5,8,11,14

Answer 1

heya !!

here is ur answer

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Given terms :- 5 ,8 ,11 ,14 ..

♦ the given terms are in AP because

A2-A1 =A3 -A2 = A4-A3

8 - 5 = 11 -8 = 14 - 11

3 = 3 = 3

d = 3

▶ sum of 24 terms is as follows ⤵

♦ Sn = n/2 [2a + (n- 1 ) d

♦ n = 24 ; a = 5 ; d = 3

substituting the Values in the formula..

• S24 = 24/2 [ 2*5 + ( 24 -1 ) 3 ]

• S24 = 24/2 [ 10 + (23) 3]

• S24 = 24/2 [ 10 +69]

• S24 = 12 [ 79]

• S24 = 948.

♦ sum of 24 terms of the given AP is 948.


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hope it helps u..!!

Answer 2

Hey

Here is your answer,

First term, a = 5
Common difference,d=8-5
=3
n=24

Sn=n/2(2a+(n-1)d)
=24/2(2x5+(24-1)3)
=12(10+23x3)
=12(10+69)
=12x79
=948

Hope it helps u!!!

Mark brainliest please