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Questions  >>  Olympiad-Math  >>  Class 6  >>  Math  >>  Number System
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Q)

Find the number of right angles turned through by the hour hand of a clock when it goes from 3 to 6.

$(A) \; 3 \\(B)\;more\;than\;2 \\(C)\; 1 \\(D)\;2 $

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A)
Solution :
Two hours hand of a clock revolves by $90^{\circ}$ or 1 right angle when it goes from 3 to 6 .
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