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. 29)
29.
The H.C.F. of 9 , 12 , 18 and 21 is:
10 25 35 40
3
5
252
5
3
1400
63
700
Answer: Option
Explanation:
Required H.C.F. = H.C.F. of 9, 12, 18, 21 = 3
L.C.M. of 10, 25, 35, 40 1400
Discussion:
29 comments Page 3 of 3.

Mozzima said:   1 decade ago
Why we have taken LCM of denominator?

Keta said:   1 decade ago
Can you please explain in depth. ?

Aparna said:   1 decade ago
Ya, its exactly the right answer.

Arunava said:   8 years ago
Agree @Sanidhya.

Please explain.
(2)

Anil said:   1 decade ago
Can you please explain shortcut?

Amrit kaur said:   1 decade ago
Any other method to find H.C.F ?

R K VIDHYAA said:   4 years ago
I too agree, the answer is 3/5.
(4)

Bhushan said:   1 decade ago
Is this the correct answer?

Saidaiah said:   7 years ago
The Lcm is 3/2800.


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