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 Class 7 Mathematics questions and answers on LCM, GCD and HCF

Ngenya refuels his car after every two days, Kerubo refuels hers after every four days while Masai refuels his after every eight days. If they all refueled their cars on 3rd March 2013, on which date did they refuel their cars together?
A. #17^(th)# March
B. #11^(th)# March
C.# 7^(th)# March
D. #5^(th)# March

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