Which term of the A.P. 27, 24, 21,…..is – 12 ?
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Answer:
14th term
Step-by-step explanation:
Given,
A.P = 27, 24, 21,…..
a = 27
d = 24 - 27 = - 3
an = l = - 12
To find : n = ?
n = [ ( l - a ) / d ] + 1
= [ ( - 12 - 27 ) / - 3 ] + 1
= [ - 39 / - 3 ] + 1
= 13 + 1
n = 14
Therefore, 14th term of an A.P is - 12.
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