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.
DEV NANDAN said:
4 years ago
Multiplay theses all numbers.
(1.80, 0.36,0.9)by 100. It Will reduce your risk!
So we got 108 , 36 , 90.
Then find the GCD (HCF).
HCF of these three = 18.
Divide 18 by 100 (at first we multiplied by 100).
18÷100= 0.18.
Hope you understood.
(1.80, 0.36,0.9)by 100. It Will reduce your risk!
So we got 108 , 36 , 90.
Then find the GCD (HCF).
HCF of these three = 18.
Divide 18 by 100 (at first we multiplied by 100).
18÷100= 0.18.
Hope you understood.
(3)
Pinky said:
5 years ago
How did you get HCF as 18? please explain.
(5)
D.Kamal said:
5 years ago
How did you get HCF as 18? please explain.
(1)
Keerthi said:
5 years ago
Why we won't do the lcm for denominators, According to the formula? Please anyone explain.
Karan said:
5 years ago
Here the answer given is 0.18.
1. Those who are saying why it is taken as 90/100 and not 9/10,the corresponding numbers are equal (multiply 10 on numerator and denominator).
2.0.18 can't be a factor of 0.9 because 0.9 is smaller than 0.18.so 0.18 can't divide 0.9.
for example 6 cannot divide 3 because 6 is a bigger number.
So, the correct answer would be 9/100 i.e 0.09.
1. Those who are saying why it is taken as 90/100 and not 9/10,the corresponding numbers are equal (multiply 10 on numerator and denominator).
2.0.18 can't be a factor of 0.9 because 0.9 is smaller than 0.18.so 0.18 can't divide 0.9.
for example 6 cannot divide 3 because 6 is a bigger number.
So, the correct answer would be 9/100 i.e 0.09.
Jaspreet said:
6 years ago
If 0.9 will be 0.09 then.
Shaina said:
6 years ago
For those who solved by: 108/100,36/100,9/10 then used the formula (hcf of numerator/lcm of the denominator) and got the answer as 0.09 BUT CAUTION...this formula can only be used when you reduced the terms to lowest form.
(1)
Pavithra said:
6 years ago
Actually the question is correct but their is no option in that the answer will be 2/100 = 0.02.
Mani said:
6 years ago
I can't understand please explain.
Vaibhav Singh said:
6 years ago
Let's do this the easy way.
1.08 = 108/100 = 27/25,
0.36 = 9/25,
0.9 = 9/10.
Gcd of Fraction = Gcd of Num/LCM of Denominator.
gcd of 27,9,9 = 9,
lcm of 25,25,10 = 50.
9/50 = 0.18.
1.08 = 108/100 = 27/25,
0.36 = 9/25,
0.9 = 9/10.
Gcd of Fraction = Gcd of Num/LCM of Denominator.
gcd of 27,9,9 = 9,
lcm of 25,25,10 = 50.
9/50 = 0.18.
(2)
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