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Question
The 7th term from the end of A.P. 3 + 8 + 13 + .... + 63 is ______.
Options
23
28
38
33
MCQ
Fill in the Blanks
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Solution
The 7th term from the end of A.P. 3 + 8 + 13 + .... + 63 is 33.
Explanation:
Last term (l) = 63
d = 8 − 3
= 5
n = 7
an = l − (n − 1)d
a7 = 63 − (7 − 1)5
a7 = 63 − (6)5
a7 = 63 − 30
a7 = 33
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