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 |
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 1 of 3.
R K VIDHYAA said:
4 years ago
I too agree, the answer is 3/5.
(4)
Ramniwas Dudhwal said:
5 years ago
2/10, 25, 35, 40.
2/5, 25, 35, 20,
2/5, 25, 35, 10,
5/5, 25, 35, 5,
5/1, 5, 7, 1,
7/1, 1, 1, 1.
LCM = 2 * 2 * 2 * 5 * 5 * 7 = 1400.
2/5, 25, 35, 20,
2/5, 25, 35, 10,
5/5, 25, 35, 5,
5/1, 5, 7, 1,
7/1, 1, 1, 1.
LCM = 2 * 2 * 2 * 5 * 5 * 7 = 1400.
(3)
Rohit said:
5 years ago
I got lcm 2800 but here it is 1400. Please anyone explain this in detail.
(5)
Saidaiah said:
7 years ago
The Lcm is 3/2800.
Sruthi said:
7 years ago
Hi. Isn't the answer 3/5?
How did it become 3/1400?
The number obtained by dividing 3 by 5 is greater than the number obtained by dividing 3 by 1400. Besides what is the credibility of the formula to find the hcf of a fraction? And also 3/5 can be used to divide all the four fractions in the question. If the question is to find the HCF of fractions then why can't the HCF we obtain, when used to divide the fractions in the question give us fractions rather than integers?
How did it become 3/1400?
The number obtained by dividing 3 by 5 is greater than the number obtained by dividing 3 by 1400. Besides what is the credibility of the formula to find the hcf of a fraction? And also 3/5 can be used to divide all the four fractions in the question. If the question is to find the HCF of fractions then why can't the HCF we obtain, when used to divide the fractions in the question give us fractions rather than integers?
(2)
Rahul dhamala said:
7 years ago
I am not getting the answer. Please explain.
(3)
Gopal said:
7 years ago
For the same question instead of hcf if LCM was asked what will be the answer? Please solve it.
Arunava said:
8 years ago
Agree @Sanidhya.
Please explain.
Please explain.
(2)
Lateef said:
8 years ago
Agree @Sanidhya.
Can anyone explain us?
Can anyone explain us?
(1)
Sanidhya said:
8 years ago
Why isn't the answer 3/5 as 3/5 divides all numbers and it is also higher than 3/1400?
(1)
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