Question

In an AP, if d = -4, n = 7, an = 4, then a is
A) 6
B) 7
C) 28
D) 20​

Answer 1

Answer:

Answer is in the above picture

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Answer 2

Answer:

a= 28 option (C)

Step-by-step explanation:

since n =7 and an= 4

a+(n-1)d=an

a+(7-1)(-4)= 4

a+ (6×(-4))=4

a-24=4

a=4+24

a=28

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