Problems on Numbers - Quantitative Aptitude (MCQ) questions for Q. 742

Q.  The sum of two numbers is 73 and their difference is 28. Find the difference between their squares.
- Published on 06 Jul 15

a. 101
b. 45
c. 2044
d. cannot be determined

ANSWER: 2044
 
Let x and y be the two given numbers
(x + y) = 73; (x – y) = 28
(x2 – y2) = (x + y) (x – y) = 73*28 = 2044

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