Question

For Ap 1,6,9 find the 6th term

Answer 1

HIIII.....ITS NOT AN AP BECAUSE THE COMMON DIFFERENCE IS NOT SAME

Answer 2

First term (a) = 1

Common difference (d) = 6 - 1 = 5

So, 'n' th term =>

a'n' = a + ( n - 1 )×d

a6 = 1 + ( 6 - 1 ) × 5

= 1 + 5×5

= 26....●

Your AP has an error. The third term must be 11 not 9.
And, In that case 26 is the answer.

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Hope it was helpful.