Question

if 4 nos. of in an A.P. whose sum is 24. find the first term​

Answer 1

Answer:

- 12

Step-by-step explanation:

given S4 = 24

also l = 24 since there is only 4 no in this ap

n = 4

to find a

we know that

S= n/2 ( a+l )

s4= 4/2 ( a + l )

24= 4/2 ( a + 24 )

24/2= a + 24

a= 12-24

a= - 12

the first term of the ap is - 12

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