Question

in a arthemetic progression, if d=-4,n=7, A​

Answer 1

Answer:

using formula

an = a + (n-1) × d

put the values ...

4 = a + ( 7 - 1 ) × (-4)

4 = a + 6 × (-4)

4 = a - 24

4 + 24 = a

28 = a

a = 28

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