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. 21)
21.
The greatest possible length which can be used to measure exactly the lengths 7 m, 3 m 85 cm, 12 m 95 cm is:
Answer: Option
Explanation:
Required length = H.C.F. of 700 cm, 385 cm and 1295 cm = 35 cm.
Discussion:
42 comments Page 3 of 5.
Prasad.p said:
9 years ago
Thanks for solving this sum. It is very helpful to me.
Sakthivel.k said:
9 years ago
Correct explanations thank you all.
Mounika said:
9 years ago
Thank you for the Excellent explanation @Aparna.
Aditya (dada) said:
9 years ago
How to decide whether to take hcf or lcm for such sums?
Tessa said:
9 years ago
We need a length which can be used to measure the three given Lengths.
So it should be a common factor of all three numbers nd it should be the greatest also. So it's clearly highest common factor or HCF.
So it should be a common factor of all three numbers nd it should be the greatest also. So it's clearly highest common factor or HCF.
(1)
Abhishek chaudhary said:
9 years ago
Please tell me one thing. When we have to take LCM and HCF?
I am confused about this.
I am confused about this.
Arun said:
9 years ago
Good explanation, Thank you friends.
Sindhuroyal said:
9 years ago
Firstly we have to find two number which is low among three numbers. So we have to take 385,700., in this two numbers 700 is divided by 385.
385)700(1The above two numbers is divided till we get remainder is 0. Then last number 35 is need to taken. We have other number which is 1295.
385
_______
315)385(1
315
_____
70)315(4
280
_______
35)70(2
70
_____
0
35)1295(37So that, 35 is answer guys.
105
_____
245
245
_____
0
_____
Ramboo said:
10 years ago
Because question says greatest possible length.
(1)
Vipin said:
10 years ago
Why 85 cm is considering to find HCF?
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