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 4 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.
Rosy said:
1 decade ago
238368-128352 = 110016.
128352-110016 = 18336.
110016-18336 = 91680.
18336-91680 = (negative, so not taken).
If we do 238362/91680 = 2.6(in decimal, so not taken).
And 128352/91680 =1.4 this too.
So now, take 128352/18336 = 7 and 238368/18336 = 13.
Two are integers, not in decimals.
So we take this value friends.
Now answer is 7/13.
128352-110016 = 18336.
110016-18336 = 91680.
18336-91680 = (negative, so not taken).
If we do 238362/91680 = 2.6(in decimal, so not taken).
And 128352/91680 =1.4 this too.
So now, take 128352/18336 = 7 and 238368/18336 = 13.
Two are integers, not in decimals.
So we take this value friends.
Now answer is 7/13.
Mamta said:
1 decade ago
Is the procedure is method or just trick?
Tony said:
1 decade ago
Is there is any other method?
Chinmaya said:
1 decade ago
What's the quick procedure for this ?
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. ?
Priya said:
1 decade ago
Please provide me the short cut method.
Mehar said:
1 decade ago
Quick process:
238368- 128352=10016;128352-10061=18336;
check multiple which gives last digit of the given numbers..
So
18336*7=128352;
18336*13=238368;
ans:7/13;
We no need to multiply fully we have to check whether the last 2 digits (1st & 10th places)only.if have any confusion rise a ticket..
238368- 128352=10016;128352-10061=18336;
check multiple which gives last digit of the given numbers..
So
18336*7=128352;
18336*13=238368;
ans:7/13;
We no need to multiply fully we have to check whether the last 2 digits (1st & 10th places)only.if have any confusion rise a ticket..
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!
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
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