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. 23)
23.
Find the highest common factor of 36 and 84.
Answer: Option
Explanation:
36 = 22 x 32
84 = 22 x 3 x 7
H.C.F. = 22 x 3 = 12.
Discussion:
19 comments Page 1 of 2.
Prasanna said:
2 decades ago
I cant understand how this problem has solved ? actually what is the procedure ? tell me
Anshu said:
1 decade ago
Can anyone explain this problem clearly.
Aparna said:
1 decade ago
firstly find the prime factors of both the numbers
then choose the common prime numbers whose power is less
tats the hcf
then choose the common prime numbers whose power is less
tats the hcf
Prashant pandey said:
1 decade ago
36/2=18
18/2=9
9/3=3
3/3=1
that is 2*2*3*3
similarly for 86 and then take comman prime between them
and then multiply as above
18/2=9
9/3=3
3/3=1
that is 2*2*3*3
similarly for 86 and then take comman prime between them
and then multiply as above
Sanjeeb,angul said:
1 decade ago
H.C.F OF 36 AND 84 is 12 so common factor is 12
Rajkumar said:
1 decade ago
Similarly 84/2=42
42/2=21
21/3=7
Then we have to take the common on both sides i.e from 2*2*3*2 and 2*2*3*7. thus 2*2*3=12. Hence the answer is obtained.
42/2=21
21/3=7
Then we have to take the common on both sides i.e from 2*2*3*2 and 2*2*3*7. thus 2*2*3=12. Hence the answer is obtained.
Raviteja said:
1 decade ago
H.C.F OF 36 AND 84 is
36)84(2
72
--
12)36(3
36
---
X
so H.C.F=12.
36)84(2
72
--
12)36(3
36
---
X
so H.C.F=12.
Parul said:
1 decade ago
Simple method:
84-36 = 48.
48-36 = 12.
HCF = 12.
84-36 = 48.
48-36 = 12.
HCF = 12.
TeenuVarghese said:
1 decade ago
H.C.F. = 22 x 3 = 12. I can't understand this line can any explain in this line?
Mahesh said:
1 decade ago
Its so good and also so much help full to all.
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