Aptitude - Decimal Fraction - Discussion

If the given fractions,the numerators are increasing by a definite value and the denominator is also increasing by a definite value but the value of denominator is greater than numerator, then the fraction having smaller numerator will be smallest fraction and the fraction having larger numerator will be largest fraction..

Make denominator same;

Option D.

= 6*30/7*30, 5*35/6*35, 4*42/5*42, 3*30/7*30, 2*42/5*42, 1*70/3*70.
= 180/210 ,175/210 ,168/210 ,90/210 ,84/210 ,70/210.
Arrange the numerator in descending order.

@All.

Here, we can use

Smaller the numerator, the smaller the fraction, and vice versa.

Alternative methods for lesser variables:

1. If the denominator is less than 10, then directly divide and arrange
2. Cross multiplication can lead to check for LHS and RHS of options in required order.

For every positive value of n.
n/(n+1) is the largest value in the given values.

@All.

A B and C options start with 1/3.

This means they are in ascending order
only D starts with 6/7,
This is arranged in descending order.
So, D is the answer.