Question

IF
If the 8th term
of an
an Ap exceeds
its s 12th term
by 8. Find the
Common
difference ​

Answer 1

Solution:-

Let a be the first term and d be the common difference of the given AP.

18th term of AP t₁₈ = a + 7d

12th term of AP t₁₂ = a + 11d

Given that the 18th term of an AP exceeds its 12th term by 8.

Therefore,

a + 7d = a + 11d + 8

7d - 11d = 8

-4d = 8

d = -2

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