Iift 2008 Question 3
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IIFT 2008
Explanation: Rani has 1 Rs with her.
Before meeting the third guard she must be having (1+2)x2 = 6 Rs.
Before meeting the second guard she must be having (6+2)x2 = 16
Before meeting the first guard she must be having (16+2)x2 = 36
Thus, Ms. Rani had 36 Rs before entering the office on the annual day.