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Quantitative Aptitude

Factors of a Number

Priya has 10 ...

Question

Priya has 10 notes of denominations 1,5,10,20,50,100,200,500,1000 & 2000. The number of different sum of money he can form from them is:

A

511

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B

1000

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C

1023

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D

1024

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Solution

The correct option is C 1023
As per the formula, the total no. of combinations possible $= 2^{n} - 1 = 2^{10} - 1 = 1023$

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