Find the 11th term from the last term of AP 27,23,19.........,-65.

1.	Find the 11th term from the last term of AP 27,23,19.........,-65.
Answer» 27, 23, 19,...., - 65 is an A.Pa = 27,common difference = a2 - a1d = 23 - 27 = - 4Rewrite the A..P,- 65, - 61, - 57, ... 19, 23, 27here,first term = a = - 65common difference = a2 - a1d = - 61 - (- 65)d = -61 + 65d = 4n = 11nth term = an = a + (n - 1)da11 = -65 + (11 - 1) 4= -65 + (10 × 4)= -65 + 40= -25Therefore ,required 11th term = a11 = - 25 -25

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