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 5 of 5.
Aparna said:
1 decade ago
Don't worry its very easy
Whenever in the question,words like greatest or measurement or length comes,it is an HCF question
look at the options
the answers are in cm,so convert in cm all the values
e.g:
3m 85cm
1m=100cm
3m=?
we get,300cm
just add 85 in this,but don't do mutiplication
i:e
300+85=385
similarly,do with other nos.
and further find its HCF
Whenever in the question,words like greatest or measurement or length comes,it is an HCF question
look at the options
the answers are in cm,so convert in cm all the values
e.g:
3m 85cm
1m=100cm
3m=?
we get,300cm
just add 85 in this,but don't do mutiplication
i:e
300+85=385
similarly,do with other nos.
and further find its HCF
(1)
Priz said:
1 decade ago
How come 35?
I need explanation.
I need explanation.
(1)
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