Mohaimain has 25 pairs of different shoes. If he loses 9 individual shoes, what is the greatest number of matching pairs he could have left ?
A. 21
B. 20
C. 19
D. 16
E. None of these
সঠিক উত্তরঃ
B.
20
Explanation:
Greatest number of paired shoes means greatest number of lost pairs 9 shoes have 4 pairs and 1 extra shoes of a pair. So, a total of 5 pairs she loses leftover pair-20
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