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:
0.03
0.9
0.18
0.108
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 4 of 8.

Himani said:   1 decade ago
1.08*100 = 108.
0.36*100 = 36.
0.9*100 = 90.

@Shiv I hope this will help you out :).

Rukaiyya said:   1 decade ago
@Shiv,

Because 0.9 = 0.90 (9/10 = 90/100) if you divided to 90/100 by 10 then you'll get 9/10. 1/2 = 0.5 = 0.50 (these all numbers are called "Half").

So we can use 90/100 in place of 9/10.

Govardhan reddy said:   1 decade ago
0.18 is correct answer.

In these path hcf = hcf (numerator)/lcm(denominator).

So we can write 1.08, 0.36, and 0.90 as 108/100 and 36/100 and 90/100 hsf (108, 36, 90) = 18 AND lcm (100, 100, 100) = 100.

As for formula 18/100 = 0.18.

So the answer is 0.18.

Dean said:   1 decade ago
Answer should be 0.09 as you can't change format of number while doing fraction G.C.D.

Boda nehru said:   10 years ago
Greatest common divisor has to be smaller than the numbers which are divided by G.C.D. And it has to be greatest, hasn't it?

So here 0.18 is greater than 0.09. So answer is 0.18.

Navya adabala said:   10 years ago
I couldn't understand this. Can anyone explain me?

Shivkumar kori said:   10 years ago
But how become HCF 2*3*3 = 18?

Please explain me briefly?

Ishika said:   9 years ago
Yaa its tough but the answer is coming to WD the help of formulas.

Aadi said:   9 years ago
I didn't understand this question?

Find the lcm of 3, 2. 7, 0.09? I need a full explanation of the solution. Can anyone explain me?

Yogesh said:   8 years ago
The factors of 9 are: 1, 3, 9.

The factors of 36 are: 1, 2, 3, 4, 6, 9, 12, 18, 36.

The factors of 108 are: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108.

Then the greatest common factor is 9. So, the answer should be 0.9.


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