Q. 15 N5.0( 1 Vote )

For A.P. T18

We know that, Tn = a + (n – 1)d

So we have, T18= a + (18 – 1)d

T18= a + 17d

Now T8= a + (8 – 1)d

T8= a + 7d

Now we have,

T18 — T8 = [a + 17d] – [a + 7d]

= 10d

the correct option is (b)

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