The 7th and 12th term of an arithmetic progression are -15 and 5 respectively. What is the 16th term?
A. 25
B. 29
C. 21
D. 33
Answer: Option C
Solution (By Examveda Team)
T7 = a + 6d = -15 ....... (1)T12 = a + 11d = 5 ...... (2)
on solving (1) and (2)
d = 4 & a = -39
T16 = a + 15d
= -39 + 15(4)
= -39 + 60
= 21
This Question Belongs to Arithmetic Ability >> Progressions
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The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is
A. 600
B. 765
C. 640
D. 680
E. 690
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