# 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:

74 comments Page 1 of 8.
Vinay kumar reddy said:
1 year ago

0.9 value is greater than 0.18 and it is a common divisor for 1.08, 0.36 and 0.9.

So, the answer should be 0.9 right?

So, the answer should be 0.9 right?

(12)

Jijuu said:
1 year ago

GCD (Greatest Common Divisor) is just another term for HCF.

Just turn the given numbers 1.08, 0.36, 0.9 into 108/100, 36/100, 90/100

And find the HCF of 108, 36, 90 which is equal to 18.

And divide this answer 18 by 100,

We get 0.18.

Just turn the given numbers 1.08, 0.36, 0.9 into 108/100, 36/100, 90/100

And find the HCF of 108, 36, 90 which is equal to 18.

And divide this answer 18 by 100,

We get 0.18.

(15)

Jeevan kumar vanum said:
2 years ago

Firstly, do subtraction from the first two numbers (108 - 36 = 72) .

Next, do subtraction of next two numbers(36-90=54)"- sign have no value".

next, subtract first and last numbers(108-90).

Then, subtrac the first Answers(72 - 52 = 18).

So, the answer is 18.

Next, do subtraction of next two numbers(36-90=54)"- sign have no value".

next, subtract first and last numbers(108-90).

Then, subtrac the first Answers(72 - 52 = 18).

So, the answer is 18.

(6)

NandiniSidharth said:
2 years ago

@All.

Here we want to know if 0.9 is the HCF or 0.18 is.

I think both the numbers are found to be factors of 0.9, 1.08 and 0.36. But since we need the HCF (Highest common factor), the highest value among them should be 0.9 between 0.9 and 0.18.

Hence I think 0.9 is the highest common factor of 0.9, 1.08 and 0.36.

Correct me if wrong, please.

Here we want to know if 0.9 is the HCF or 0.18 is.

I think both the numbers are found to be factors of 0.9, 1.08 and 0.36. But since we need the HCF (Highest common factor), the highest value among them should be 0.9 between 0.9 and 0.18.

Hence I think 0.9 is the highest common factor of 0.9, 1.08 and 0.36.

Correct me if wrong, please.

(2)

Omprakash said:
2 years ago

What is G.C.D? Explain please.

(1)

Viijay said:
3 years ago

Convert them into fractions:

i.e:108/100,36/100,90/100.

HCF of fractions: HCF of numerator/LCM of denominator;

HCF(108,36,90)/LCM(100,100,100),

= 18/100,

= 0.18.

Hope this is helpful.

i.e:108/100,36/100,90/100.

HCF of fractions: HCF of numerator/LCM of denominator;

HCF(108,36,90)/LCM(100,100,100),

= 18/100,

= 0.18.

Hope this is helpful.

(9)

DEV NANDAN said:
3 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).

18Ã·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).

18Ã·100= 0.18.

Hope you understood.

(2)

Pinky said:
3 years ago

How did you get HCF as 18? please explain.

(4)

D.Kamal said:
4 years ago

How did you get HCF as 18? please explain.

(1)

Keerthi said:
4 years ago

Why we won't do the lcm for denominators, According to the formula? Please anyone explain.

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