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. 8)
8.
The G.C.D. of 1.08, 0.36 and 0.9 is:
Answer: Option
Explanation:
Given numbers are 1.08, 0.36 and 0.90. H.C.F. of 108, 36 and 90 is 18,
H.C.F. of given numbers = 0.18.
Discussion:
78 comments Page 6 of 8.
Kirti said:
1 decade ago
I didn't got how the hcf of 1.08;0.36 & 0.9 coming out to be 18?
Gaurav Goyal said:
1 decade ago
Hi everyone.
I believe the answer should be .9 as 18 is greatest common divisor undoubtedly, but when it come to an option between .9 & .18, .9 is bigger than .18, we have to find the greater right?
Had it been .9 and 1.8, 1.8 would have been the correct answer.
I believe the answer should be .9 as 18 is greatest common divisor undoubtedly, but when it come to an option between .9 & .18, .9 is bigger than .18, we have to find the greater right?
Had it been .9 and 1.8, 1.8 would have been the correct answer.
Punamchand said:
1 decade ago
Its Simple Guys.
1). Multiply each number with 100 so that we get whole number.
1.08*100 = 108.
0.36*100 = 36.
0.90*100 = 90.
2). Now Find prime factors of each one.
108 = 3*3*3*2*2.
36 = 3*3*2*2.
90 = 3*3*5*2.
3). Find HCF from each ie 3*3*2 = 18.
Divide 18 by 100 as initially we multiply to get answer in decimal format,
18/100 = 0.18.
Which is the actual answer.
1). Multiply each number with 100 so that we get whole number.
1.08*100 = 108.
0.36*100 = 36.
0.90*100 = 90.
2). Now Find prime factors of each one.
108 = 3*3*3*2*2.
36 = 3*3*2*2.
90 = 3*3*5*2.
3). Find HCF from each ie 3*3*2 = 18.
Divide 18 by 100 as initially we multiply to get answer in decimal format,
18/100 = 0.18.
Which is the actual answer.
Deepika said:
1 decade ago
Given numbers are 1.08, 0.36 and 0.90. H.C.F. of 108, 36 and 90 is 18,
18 is HCF of 90 and 108.
HCF of 1.08,0.36,0.90 is 0.18.
90)108(1
90_____
18)90(5
90
-----
0
18 is HCF of 90 and 108.
18)36(2
36
-------
0
HCF of 1.08,0.36,0.90 is 0.18.
Gjgkj said:
1 decade ago
Why it can't be 0.9. It is also dividing all of these number so why it cannnot be the solution.
Anil Kumar said:
1 decade ago
What is G.C.D. Tell me its Abbreviation please?
Pankaj kumar said:
1 decade ago
Dude, all is multiplied by common no. 100 and then find their hcf. Finally, as it was multiplied by 100 so divide the result by 100.
RAMBO said:
1 decade ago
Thanks @Sreeraj for:
3|108, 36, 90
|_____________
3| 36, 12, 30
|_____________
2| 12, 4, 10
|_____________
6, 2, 5
So the H.C.F is 3*3*2 = 18
[need to brush up school's maths book] :P ;)
3|108, 36, 90
|_____________
3| 36, 12, 30
|_____________
2| 12, 4, 10
|_____________
6, 2, 5
So the H.C.F is 3*3*2 = 18
[need to brush up school's maths book] :P ;)
(1)
Sreeraj said:
1 decade ago
From the given question,
We can take 1.08 = 108 (1.08*100)
0.36 = 36 (0.36*100)
0.9 = 90 (0.9*100), or making the calculation easier. :)
3|108, 36, 90
|_____________
3| 36, 12, 30
|_____________
2| 12, 4, 10
|_____________
6, 2, 5
So the H.C.F is 3*3*2 = 18
At last we have to divide the H.C.F by 100 (Because earlier we multiplied all the given number with 100)
So the final answer is 18/100 = 0.18
We can take 1.08 = 108 (1.08*100)
0.36 = 36 (0.36*100)
0.9 = 90 (0.9*100), or making the calculation easier. :)
3|108, 36, 90
|_____________
3| 36, 12, 30
|_____________
2| 12, 4, 10
|_____________
6, 2, 5
So the H.C.F is 3*3*2 = 18
At last we have to divide the H.C.F by 100 (Because earlier we multiplied all the given number with 100)
So the final answer is 18/100 = 0.18
Tara said:
1 decade ago
@Pratyusha,
108/100=27/25
36/100=9/25
&9/10
hcf of nrs= 9
lcm of drs=50
so ans=9/50=18/100=0.18
108/100=27/25
36/100=9/25
&9/10
hcf of nrs= 9
lcm of drs=50
so ans=9/50=18/100=0.18
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