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

Problems on H.C.F and L.C.M
Find the largest number of four digits exactly divisible by 12, 15, 18 and 27.

8720
9620
9720
8760

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
Find the L.C.M.. of 72, 108 and 2100.

37800
38600
38000
37000

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
Which of the following fractions is the largest?

63/80
31/40
7/8
13/16

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
Find the lowest common multiple of 24, 36 and 40.

480
240
120
360

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

 2 | 24 - 36 - 40 -------------------- 2 | 12 - 18 - 20 -------------------- 2 | 6 - 9 - 10 ------------------- 3 | 3 - 9 - 5 ------------------- | 1 - 3 - 5 L.C.M. = 2 x 2 x 2 x 3 x 3 x 5 = 360.

Problems on H.C.F and L.C.M
Three number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is:

200
80
120
40

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

 Let the numbers be 3x, 4x and 5x.Then, their L.C.M. = 60x.So, 60x = 2400 or x = 40. The numbers are (3 x 40), (4 x 40) and (5 x 40).Hence, required H.C.F. = 40.

Problems on H.C.F and L.C.M
The least number which should be added to 2497 so that the sum is exactly divisible by 5,6,4 and 3 is :

33
13
23
3

ANSWER DOWNLOAD EXAMIANS APP
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