Question

Find the 12th term of a ap from the end 17,14,11,........,-61

Answer 1

-28 is the 12 th term of a ap from end ...

explanation ,

-61 is the first term from the end .

therefore a = -61

and common difference = d = 3

therefore ,

using the formula we get ,

tn= a+(n-1 ) d

t12 = -61 +(12-1)3

=-61+11×3

=-61+33

= -28

therefore 12 th term of the AP from end is -28 ..

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