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. 24)
24.
Which of the following fraction is the largest ?
Answer: Option
Explanation:
L.C.M. of 8, 16, 40 and 80 = 80.
| 7 | = | 70 | ; | 13 | = | 65 | ; | 31 | = | 62 |
| 8 | 80 | 16 | 80 | 40 | 80 |
| Since, | 70 | > | 65 | > | 63 | > | 62 | , so | 7 | > | 13 | > | 63 | > | 31 |
| 80 | 80 | 80 | 80 | 8 | 16 | 80 | 40 |
| So, | 7 | is the largest. |
| 8 |
Discussion:
49 comments Page 2 of 5.
Shyam said:
1 decade ago
Dear @Naveenkk can you please explain with details as @Hanumanth.
And is this method applicable to all this type of problems. Like those don't have common divisor.
And is this method applicable to all this type of problems. Like those don't have common divisor.
Vishwanath said:
7 years ago
Since there denominators are divisible by 8, simplify them into.
7/1, 13/2, 31/5, 63/10.
After solving them, it's clear that 7 is the largest.
7/1, 13/2, 31/5, 63/10.
After solving them, it's clear that 7 is the largest.
(4)
Glory said:
1 decade ago
Hi guys,
Which one is correct in simple way am confused with your solutions, I need to understand how to use L.C.M in solving that question?
Which one is correct in simple way am confused with your solutions, I need to understand how to use L.C.M in solving that question?
Vijaya said:
1 decade ago
Easy way is
7/8=0.875
13/16=0.8125
31/40=0.775
63/80=0.7875
by this we can easily say dat 7/8 is the largest fraction of them.
7/8=0.875
13/16=0.8125
31/40=0.775
63/80=0.7875
by this we can easily say dat 7/8 is the largest fraction of them.
Md. Khurshid said:
1 decade ago
I think @Hanumanth is right, because it is easiest way to check the correct answer that which fraction is larger or smaller.
NaveenKK said:
1 decade ago
Add 1 in for all the numerators.
Or simply find the diff bw denominator-numerator whose diff is less that is your answer.
Or simply find the diff bw denominator-numerator whose diff is less that is your answer.
Asif said:
1 decade ago
I think @Vijaya is right, because it is easiest to check the correct answer that which fraction is larger or smaller.
Deepti said:
1 decade ago
The answer given by @Hanumanth is not applicable to all kinds of questions with same nature. I have tried. Its wrong.
Sikha said:
1 decade ago
I don't understand how we are getting 7/8 = 70/80.
13/16=65/80.
31/40=62/80.
Please somebody explain me dis?
13/16=65/80.
31/40=62/80.
Please somebody explain me dis?
Saumyojit Das said:
6 years ago
Why we are taking out LCM why not HCF?
HCF will also give a common factor in the denominator.
HCF will also give a common factor in the denominator.
(1)
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