GAT Subject
Engineering
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Permutations and Combinations - Data Intensity 1 :: Discussion
| 27. | A person ordered 5 pairs of black socks and some pairs of brown socks. The price of a black pair was thrice that of a brown pair while preparing the bill the bill clerk inter-changed the number of black and brown pairs by mistake which increased the bill by 100% what was the number of pair of brown socks in the original order? | |
| A. | 10 | |
| B. | 15 | |
| C. | 20 | |
| D. | 25 | |
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