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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)
Problems on H.C.F and L.C.M
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:
15 cm
25 cm
35 cm
42 cm
Answer: Option
Explanation:

Required length = H.C.F. of 700 cm, 385 cm and 1295 cm = 35 cm.

Discussion:
42 comments Page 2 of 5.
Ramboo said:   10 years ago
Because question says greatest possible length.
(1)
Priz said:   1 decade ago
How come 35?

I need explanation.
(1)
Manasbh said:   8 years ago
Thanks a lot.
Raviteja said:   1 decade ago
Required length = H.C.F. of 700 cm, 385 cm and 1295 cm.
385)700(1
    385
    ---
    315)385(1
        315
        ---
        70)315(4
           280
           ---
           35)70(2
              70
              --
               x

35)1295(37
   1295
   ----
    X
   ----
i.e., H.C.F. of 700 cm, 385 cm and 1295 cm = 35 cm.
111 said:   1 decade ago
Thanks Ravireja
111 said:   1 decade ago
Thanks raviteja
Anusha said:   5 years ago
Thank You @NKC.
AARAV BARNWAL said:   5 years ago
Thank you @Raviteja.
Baljit kaur said:   6 years ago
Thanks All for explaining the problem.
Nikhil said:   1 decade ago
Why it is HCF? why not LCM?

Please explain.
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