A heap of stones can be made up into groups of 21. When m... — Answer & Explanation | PrepBeePakistan

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MEDIUMENGLISHMathematics

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?

Correct answer: A

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