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

Problems on H.C.F and L.C.M
Three numbers are in the ratio 1:2:3 and their H.C.F is 12. The numbers are:

10, 20, 30
4, 8, 12
10, 20, 30
5, 10, 15

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Problems on H.C.F and L.C.M
Find the largest number which divides 62, 132 and 237 to leave the same remainder in each case.

35
48
52
22

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Required number =  H.C.F. of (132 - 62), (237 - 132) and (237 - 62)                                      =  H.C.F. of 70, 105 and 175 = 35.

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

11
3
21
7

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Problems on H.C.F and L.C.M
The least number which when divided by 8, 12 and 16, leave in each remainder 3, is?

71
51
70
69

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Problems on H.C.F and L.C.M
H.C.F. of 4 x 27 x 3125, 8 x 9 x 25 x 7 & 16 x 81 x 5 x 11 x 49 is:

540
1260
360
180

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Problems on H.C.F and L.C.M
A rectangular courtyard 3.78 metres long and 2.25 metres wide is to be paved exactly with square title, all of the same size. What is the largest size of the tile which could be used for the purpose

42 cms
21 cms
None of these
11 cms

ANSWER DOWNLOAD EXAMIANS APP
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