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in Arithmetic Progression by (56.3k points)
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Find:

10th term of the AP -40, -15, 10, 35, …………. 

1 Answer

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Best answer

Given A. P. is – 40, -15, 10, 35, ……….

First term (a) = -40

Common difference (d) = Second term – fast term

= -15 – (- 40)

= 40 – 15

= 25

We know that, nth term of an A.P. an = a + (n – 1)d

Then, 10th term of A. P. a10 = -40 + (10 – 1)25

= – 40 + 9.25

= – 40 + 225

= 185

∴ 10th term of the A. P. is 185.

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