Problems on H.C.F and L.C.M
Find the HCF of of 0.36, 0.48, 0.72 and 2.4

0.16
0.4
0.8
0.12

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Problems on H.C.F and L.C.M
An electronic device makes a beep after every 60 sec. Another device makes a beep after every 62 sec. They beeped together at 10 a.m. The time when they will next make a beep together at the earliest,

12 : 31 am
9 : 31 am
10 : 31 am
11 : 31 am

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Problems on H.C.F and L.C.M
Three numbers which are co-prime to each other are such that the product of the first two is 551 and that of the last two is 1073. The sum of the three numbers is:

95
80
85
90

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