Others Maths Puzzle

MULTIPLICATION: 1097*1097......WHAT IS HE SHORTCUT RULE FOR IT?????

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Others Other Question

The population of a town is 25280. It increases by 10 % in the first year abd decreases by 25 % in the next year. What is the population of the town at the end of two years..

a. 20856 b. 34760 c. 11614 d. 22408 e. none If A:B:C = 2:3:4 , then A/B : B/C : C/A is equal to :

A. 4:9:16 B. 8:9:12 C. 8:9:16 D. 8:9:24