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1. |
A heap of stones can be made up into groups of 21. When made up into groups of 16, 20, 25 and 45 there are 3 stones left in each case. How many stones at least can there be in the heap? |
A. | 7203 |
B. | 2403 |
C. | 3603 |
D. | 4803 |
Answer» B. 2403 | |