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Formula for Sum of n Terms of an AP

What is the d...

Question

What is the difference between the total of Deepak and Chandan?

A

4

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B

8

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C

14

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D

18

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Solution

The correct option is D 18
Go through a comprehensive analysis of the 16 possibilities for each of the 4, using direct and indirect clues. The following table will emerge:
$\begin{matrix} A m a r & 10 & 18 & 2 & 28 & T o t a l B 1 & D 1 & C 2 & C 3 & 58 B i r n & 30 & 22 & 6 & 14 & 72 A 3 & A 1 & A 4 & C 4 C h a n d a n & 12 & 4 & 26 & 20 & 62 A 2 & D 2 & D 3 & B 4 D e e p a k & 16 & 24 & 32 & 8 & 80 B 2 & B 3 & C 1 & D 4 \end{matrix}$
All four questions will get solved on this basis.

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