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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:

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

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Problems on H.C.F and L.C.M
Find the least square number which is divisible by 10, 12, 15 and 18?

2500
1600
3600
900

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Problems on H.C.F and L.C.M
L.C.M. of two prime numbers x and y (x > y) is 161 The value of 3y – x is:

2
-1
-2
1

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Problems on H.C.F and L.C.M
The leas number which when divided by 5, 6, 7 and 8 leaves a remainder 3 but when divided by 9 leaves no remainder, is :

1683
2523
3363
1677

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Problems on H.C.F and L.C.M
Which of the following integers has the most number of divisors?

99
176
101
182

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

22
12
34
16

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

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