Which number has only two factors: 21
, 23
, 25
, 27
?
Which number has only two factors: 21
, 23
, 25
, 27
?



How many vertices, faces, and edges does a cuboid have?
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Fill in the blank:
____________ INR 100 notes make 500 rupees.
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The smallest 7 digit number in the system is?
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