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IF 1+ 2 +3 + ……. N terms = 28 then...

IF ` 1+ 2 +3 + ……. N` terms = 28 then n si equal to

A

28

B

7

C

8

D

56

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The correct Answer is:
B
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CPC CAMBRIDGE PUBLICATION-CPC MODEL QUESTION PAPER -6-QUESTION
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