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Problems on H.C.F and L.C.M

Problems on H.C.F and L.C.M
The H.C.F and L.C.M of two numbers are 84 and 21 respectively. If the ratio of the two numbers is 1 : 4 , then the larger of the two numbers is

12
48
84
108

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
Find the highest common factor of 36 and 84.

34
22
12
16

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

36 = 2² x 3²84 = 2² x 3 x 7H.C.F. = 2² x 3 = 12.

Problems on H.C.F and L.C.M
A. B. and C. start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds.all starting at the same point.

46 minutes 12 seconds.
42 minutes 36 seconds
45 minutes
26 minutes 18 seconds

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
The greatest number that exactly divided 105, 1001 and 2436 is

7
21
3
11

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
The HCF of 2 numbers is 11 and LCM is 693.If one of numbers is 77.find the other number ?

98
99
97
100

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Product of two numbers= HCF x  LCM                        77 x a = 11 x 693Other number a  = (11×693)/77 = 99.

Problems on H.C.F and L.C.M
Find the greatest number which on dividing 1661 and 2045, leaves a reminder of 10 and 13 respectively

127
133
129
131

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

In this type of question, its obvious we need to calculate the HCF, trick isHCF of (1661 - 10) and (2045 -13)= HCF (1651, 2032) = 127

MORE MCQ ON Problems on H.C.F and L.C.M

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