Aptitude - Problems on H.C.F and L.C.M - Discussion

Discussion Forum : Problems on H.C.F and L.C.M - General Questions (Q.No. 10)
10.
The least multiple of 7, which leaves a remainder of 4, when divided by 6, 9, 15 and 18 is:
74
94
184
364
Answer: Option
Explanation:

L.C.M. of 6, 9, 15 and 18 is 90.

Let required number be 90k + 4, which is multiple of 7.

Least value of k for which (90k + 4) is divisible by 7 is k = 4.

Required number = (90 x 4) + 4   = 364.

Discussion:
88 comments Page 9 of 9.

Sakthivel C.M said:   1 decade ago
How did you find K ?

Koti reddy said:   1 decade ago
How to come k=4 ?

Manasa said:   1 decade ago
Thank you sundar.

Sweet said:   7 years ago
How come 90k+ 4?

Habibali@mail.com said:   1 decade ago
Thankx Rahul...

Anonymous said:   1 decade ago
How k=4 comes?

Akhil said:   1 decade ago
Thank rahul.

Deepak said:   6 years ago
Thanks all.


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