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Which term of the series 5,8,11,14,........

Which term of the series 5,8,11,14,.....is 320?

A

104th

B

105th

C

106th

D

64th

Text Solution

Verified by Experts

The correct Answer is:
C
Clearly, `5 + 3 = 8, 8 + 3 = 11, 11 + 3 = 14`,……….
So, the series is an A.P in when a -5 and d = 3
320 be the nth term of the series.
Then 320 = 5 + (n-1) x 3 or (n-1) = 105 or n = 106
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