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Aptitude & Logical Reasoning Quiz -14

Look at this series: 22, 21, 23, 22, 24, 23... What number should come next?

Explanation:
In this simple alternating subtraction and addition series; 1 is subtracted, then 2 is added, and so on.

BRISTLE: BRUSH

Explanation:
A bristle is a part of a brush; a key is a part of a piano.

How many meaningful English words can be made with the letters IFEL using each letter only once in each word?

Explanation:
Meaningful Words => LIFE, FILE

What is the least number that can be added to 3500 to make it a perfect square?

Explanation:
59 * 59 = 3481
60 * 60 = 3600
Therefore Required number
= 3600 - 3500 = 100

If the fractions 4/9, 7/12, 3/7, 12/17 and 1/2 are arranged in descending order of their values, which one will be the third?

Explanation:
4/9 = 0.44; 7/12 = 0.583; 3/7 = 0.43; 12/17 = 0.706; 1/2 = 0.5
12/17 > 7/12 > 1/2 > 4/9 > 3/7