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. 13)
13.
| Reduce | 128352 | to its lowest terms. |
| 238368 |
Answer: Option
Explanation:
128352) 238368 ( 1
128352
---------------
110016 ) 128352 ( 1
110016
------------------
18336 ) 110016 ( 6
110016
-------
x
-------
So, H.C.F. of 128352 and 238368 = 18336.
128352 128352 ÷ 18336 7
Therefore, ------ = -------------- = --
238368 238368 ÷ 18336 13
Discussion:
59 comments Page 3 of 6.
Yuvaraj said:
7 years ago
128352/238368 is simplified to 12/23 (i.e first to digits from numerator and denominator)
It will give approximately 0.48.
Now check in options which one is nearer to 0.48.
7/13 is the answer.
Hope it helps.
It will give approximately 0.48.
Now check in options which one is nearer to 0.48.
7/13 is the answer.
Hope it helps.
Sandeep said:
1 decade ago
Hey, someone check option A.
You have checked---as-3*4 = Match the last number.
But why dint you check 4*2 this also match the last no 238368--match found, but option A is not true.
You have checked---as-3*4 = Match the last number.
But why dint you check 4*2 this also match the last no 238368--match found, but option A is not true.
Shraddha said:
1 decade ago
Find the factors of 128352.
Then find the factors of 238368.
Cancel out the common factors.
It leads to the ratio of uncommon factors, i.e. 7/13, which is the lowest ratio.
Then find the factors of 238368.
Cancel out the common factors.
It leads to the ratio of uncommon factors, i.e. 7/13, which is the lowest ratio.
Jiji said:
2 years ago
First, find the HCF of the numerator and denominator which is 18336, then divide both the numerator and denominator by 18336. Therefore, the answer is 7/13.
(25)
V!cky said:
10 years ago
391/667.
Guys you try this some from subtraction method you will get wrong answer.
Answer is 17/29. Subtraction method not always give correct answer.
Guys you try this some from subtraction method you will get wrong answer.
Answer is 17/29. Subtraction method not always give correct answer.
Reeta said:
1 decade ago
Sona,
Result of 238368-128352=110016
128352-110016=18336
so
18336*7=128352
18336*13=238368
or
128352/18336=7
238368/18336=13
so ans.=7/13
Result of 238368-128352=110016
128352-110016=18336
so
18336*7=128352
18336*13=238368
or
128352/18336=7
238368/18336=13
so ans.=7/13
Priya said:
1 decade ago
Its too lengthy method with very much calculation. Should we leave this type of questions in competitive exam. Or any short method also available. ?
Sona said:
1 decade ago
Hey Mehar
Result of 238368-128352=110016 not 10016.
How can we know that - At which stage we have to stop subtracting?
Please clarify!
Result of 238368-128352=110016 not 10016.
How can we know that - At which stage we have to stop subtracting?
Please clarify!
Ammu said:
1 decade ago
We have to stop subtracting when the result becomes negative.
128352-110016 = 18336.
18336-110016 = negative number.
128352-110016 = 18336.
18336-110016 = negative number.
Piyush said:
2 decades ago
Isnt' thr a quicker way tpo find this ans??.. because the answer shown looks to be very time consuming.
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