Question

If for an A.P the first term is 11 and the common difference is -2,the find 1st three term​

Answer 1

Answer:

Given that, a=11

d=-2

a1 = 11

a2 = 11-2 =9

a3 = 9-2 =7

Therefore, first 3 term of the given AP are 11,9 and 7

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Answer 2

Answer:11,9,7

Step-by-step explanation:

Sn=a+(n-1)×d

a=11,d=-2,n=1,2,3,........

S3=11+(3-1)×(-2)

    =11+(2)(-2)

S3=11-4=7