Question

Q.17. In an AP if d = - 4. n = 7 and an = 4
,
then a is equal to
О(а) 6
(b) 7
ООО
(c) 20
О(d) 2в​

Answer 1

Step-by-step explanation:

$an = a + (n - 1)d \\ 4 = a +( 7 - 1)( - 4) \\ 4 = a - 24 \\ a = 28$

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Answer 2

Answer:

a=28 is the answer.....

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