Quantitative Ability: Preparation tips

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To find square of a number between 40 to 50:

Step 1: Subtract the number from 50 getting result A.

Step 2: Square A getting result X.

Step 3: Subtract A from 25 getting result Y

Step 4: Answer is xy

Example 1: 44

50-44=6

Sq of 6 =36

25-6 = 19

So answer 1936

Example 2: 47

50-47=3

Sq 0f 3 = 09

25-3= 22

So answer = 2209

 

 

 

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