__The H.C.F. of 9/10 , 12/25 , 18/35 and 21/40 is:__ – McqOptions

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1.	__The H.C.F. of 9/10 , 12/25 , 18/35 and 21/40 is:__
A.	3/5
B.	252/5
C.	3/1400
D.	63/700
Answer» D. 63/700

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