Question
In an arithmetic progression, the pth term is 1/q and the qth term is 1/p. Find the sum of the first ‘pq’ terms of the progression.
Options:
A .
|
| B . pq + 1 |
C .
|
D .
|
| E . p*q |
Answer: Option C
:
C
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:
C
Solution: OPTION (c)
Using Assumption
Let p = 1 and q= 2
Then as stated 1st term is ½ and 2nd term is 1. So we have an AP with common difference ½.
So the AP is: ½, 1, 3/2, 2, 5/2….
Now sum of first pq terms : sum of first two terms = ½ + 1 = 3/2
Put p = 1 and q = 2 in the options:
Correct option is (c)
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