Question

Find out the pair which has a larger product without actual multiplication. $(25\times 75,28\times 72)$

• A. $28\times 72$
• B. Can’t determine
• C. $25\times 75$
• D. Both have same product

Answer 1

The correct option is A $28\times 72$

The correct option is A.

Addition of the Numbers:
25 + 75 = 100
28 + 72 = 100
As, addition of the numbers is same for both pairs so we can say that the pair of numbers with least difference will result in a larger product.
Difference of the numbers:
75 − 25 = 50
72 − 28 = 44
Hence, the pair 28×72 has a larger product.