Aptitude - Decimal Fraction - Discussion

Discussion Forum : Decimal Fraction - General Questions (Q.No. 4)

Decimal Fraction

The value of	0.1 x 0.1 x 0.1 + 0.02 x 0.02 x 0.02	is:
	0.2 x 0.2 x 0.2 + 0.04 x 0.04 x 0.04

0.0125

0.125

0.25

0.5

Answer: Option

Explanation:

Given expression =	(0.1)³ + (0.02)³	=	1	= 0.125
	2³ [(0.1)³ + (0.02)³]		8

Discussion:

34 comments Page 2 of 4.

Prasanna said: 1 decade ago

It simple guys.

Just divide (0.1) hole power 3 and (0.02) hole power 3 and take cube of 2 so we get the answer 1/8.

Saurabh said: 2 years ago

Just simply take 2^3 as common in the denominator.
(0.1)^3 + (0.02)^3/2^3(0.1^3+0.02^3),
= 1/2^3 = 1/8,
= 0.125.

(1)

Sankar said: 1 decade ago

We know the formula, (a^m x b^m) = (ab)^m. In the denominator, take 2^3 common & apply above formula.

Maulik said: 1 decade ago

If you calculate with calculator than is the answer is same ?

Can anybody explain it in simple way.

Sunilkumar said: 1 decade ago

Here,

2*[0.1] = 0.2.
2*[0.02] = 0.04.

Thus taking 2 common.

==> 23 [(0.1)3 + (0.02)3].

Sumon said: 8 years ago

Explanation.

0.1^3+0.2^3/0.2^3+0.4^3 look here,
.04^3 means.0.2^3*0.2^3.
So, 0.1/2^3.

(2)

Chandu said: 1 decade ago

First answer is good one we must take the common 2 so we can get the answer essay.

Vasu said: 9 years ago

2((0.1)^3 + (0.02)^3) = (0.2)^3 + (0.04)^3 why do we have to take 2^3 out of it?

Vasista said: 6 years ago

0.1X0.1X0.1/((2X0.1)+(2X0.1)+(2X0.1) and so on;

Hence 1/2^3 that is 0.125.

(1)

Saddam said: 8 years ago

(0.1)^3+(0.2)^3=0.9 /(0.2)^3+(0.4)^3 = 0.70,
So, 0.9/0.70 = 0.125.

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