PU-MET : Panjab University MBA Entrance Exam with MCQ Answers 2024

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52.

A person X has four notes of Rupee 1, 2, 5 and 10 denomination. The number of different sums of money she can form from them is

A: 16
B: 15
C: 12
D: 8

The answer is: B

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Explanation

Let's break it down step by step in simple terms:

Person X has four different notes: ₹1, ₹2, ₹5, and ₹10.

To find how many different sums of money can be formed, we look at all possible combinations:

  1. Using no notes → ₹0 (but we don't count this).
  2. Using one note at a time → ₹1, ₹2, ₹5, ₹10 (4 sums).
  3. Using two notes at a time → ₹1+₹2=₹3, ₹1+₹5=₹6, ₹1+₹10=₹11, ₹2+₹5=₹7, ₹2+₹10=₹12, ₹5+₹10=₹15 (6 sums).
  4. Using three notes at a time → ₹1+₹2+₹5=₹8, ₹1+₹2+₹10=₹13, ₹1+₹5+₹10=₹16, ₹2+₹5+₹10=₹17 (4 sums).
  5. Using all four notes together → ₹1+₹2+₹5+₹10=₹18 (1 sum).

Total different sums = 4 + 6 + 4 + 1 = 15.

 Correct option: B: 15.