What is the largest number of pupils among whom 24 pencils and 36 erasers can be shared equally with none left over?
A4
B72
C6
D12CORRECT
Common EntranceMathematicsHCF
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Why the answer is D, and why the others tempt you.
The largest number that divides both 24 and 36 exactly is their highest common factor, which is 12.
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