Question

what persentage from 1-50 have sq ending with the digit 1​

Answer 1

Answer:  20%

Step-by-step

The squares of numbers having 1 and 9 as the unit's digit end in the digit 1.

Such numbers are,1,9,11,19,21,29,31,39,41,49 i.e.,There are 10 such numbers.∴Required percentage=(10/50×100)%=20%

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