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 2 of 8.
Nisha said:
1 decade ago
Please solve this ques by using this formula
=hcf of no./lcm of no.
=hcf of no./lcm of no.
Babu said:
1 decade ago
Thanks a lot.
Harry said:
1 decade ago
How could it be possible....
Given is 1.08 which is =108/100
then .36 = 36/100
the .9 = 9/10
now we hav to find the HCF of 108,36 and 9 which is 9
and LCM of 100,100,10....which is 100
so ans shud b 9/100=.09....
correct me is i am wrong...
MY doubt is why we have converted it in 90...??? plz explain
Given is 1.08 which is =108/100
then .36 = 36/100
the .9 = 9/10
now we hav to find the HCF of 108,36 and 9 which is 9
and LCM of 100,100,10....which is 100
so ans shud b 9/100=.09....
correct me is i am wrong...
MY doubt is why we have converted it in 90...??? plz explain
Kumars.vinay009 said:
1 decade ago
Babu 3, 9, 18, here 18 is the largest number than 3, 9.
So we have to take 18 is the G. C. D.
So we have to take 18 is the G. C. D.
Seenu said:
1 decade ago
@harry
After decimal we are taking the 2 letters from each one thats why we are using 90 in place of 9.
After decimal we are taking the 2 letters from each one thats why we are using 90 in place of 9.
Prathyusha said:
1 decade ago
How could it be possible ?
Given is 1.08 which is =108/100
Then .36 = 36/100
the .9 = 9/10
now we hav to find the HCF of 108,36 and 9 which is 9
and LCM of 100,100,10....which is 100
so ans shud b 9/100=.09....
Correct me is i am wrong ?
MY doubt is why we have converted it in 90? please explain.
Given is 1.08 which is =108/100
Then .36 = 36/100
the .9 = 9/10
now we hav to find the HCF of 108,36 and 9 which is 9
and LCM of 100,100,10....which is 100
so ans shud b 9/100=.09....
Correct me is i am wrong ?
MY doubt is why we have converted it in 90? please explain.
Ramkumar said:
1 decade ago
Hi Prathyusha,
to be very clear and simple....
the number's are 1.08 , 0.36 and 0.9
Also the numbers can be written as 1.08*100/100=108/100 , 0.36*100/100= 36/100 and 0.90*100/100 =90/100
So the number's are 108/100,36/100 and 90/100
Now , GCD of
108= 2*2*3*3*3
36= 2*2*3*3
90= 3*3*5*2
So the HCF for these three numbers are 2*3*3= 18
now the hcf of
100= 2*2*5*5
100= 2*2*5*5
100= 2*2*5*5
so HCF these numbers are 100
so 18/100= 0.18... thats it :)
to be very clear and simple....
the number's are 1.08 , 0.36 and 0.9
Also the numbers can be written as 1.08*100/100=108/100 , 0.36*100/100= 36/100 and 0.90*100/100 =90/100
So the number's are 108/100,36/100 and 90/100
Now , GCD of
108= 2*2*3*3*3
36= 2*2*3*3
90= 3*3*5*2
So the HCF for these three numbers are 2*3*3= 18
now the hcf of
100= 2*2*5*5
100= 2*2*5*5
100= 2*2*5*5
so HCF these numbers are 100
so 18/100= 0.18... thats it :)
Appu said:
1 decade ago
If you are given the nos as 108/100, 36/100, 9/10 the answer will be 9/100. Isnt it?
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
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
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