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. 7)
7.
Three number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is:
Answer: Option
Explanation:
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.
Discussion:
41 comments Page 4 of 5.
Sanjay said:
1 decade ago
Can this approach be applied for any higher co-prime numbers ?
Jayakrishna vinod said:
1 decade ago
What is the use of LCM & HCF in our day to day life?
P.vinothini said:
1 decade ago
Please if you don't mine reply what is mean by co-prime?
Pappu said:
10 years ago
Simply explain what is L.C.M and H.C.F please?
Sanju said:
9 years ago
L.C.M = 2400.
3 * 4 * 5 = 60.
2400/60 = 40.
3 * 4 * 5 = 60.
2400/60 = 40.
Master said:
9 years ago
LCM = 2400.
2400/60 = 40 => Right answer.
2400/60 = 40 => Right answer.
Shekinarose said:
8 years ago
Can anyone explain where 60 came from?
Achu said:
1 decade ago
Easy method
3*4*5 = 60
2400/60 = 40
3*4*5 = 60
2400/60 = 40
Jahulhak said:
10 years ago
3*4*5-60 = 2400/60.
= 40 answer.
= 40 answer.
Rahul said:
1 decade ago
If given HCF what can I do. ?
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