Question

The 23rd term of the A.P., 7,5, 3, 1, ........ is
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Answer 1

Answer:

The 23rd term of the A.P., 7,5, 3, 1, ........ is -37.

Step-by-step explanation:

a=7

d=-2

t²³=a+(23-1)d

t²³=7+22×-2

t²³=-37.

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Answer 2

Step-by-step explanation:

$d = a2 - a1 \\ d = 5 - 7 \\ d = - 2 \\ a23 = a + (n - 1)d \\ a23 = 7 + (23 - 1) \times - 2 \\ a23 = 7 + 22 \times - 2 \\ a23 = 7 - 44 \\ a23 = -37$

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