# Percentage Mcqs

Q.  What percentage of numbers from 1 to 70 have squares that end in the digit 1?

a. 1
b. 14
c. 20
d. 21

ANSWER: See Answer

Clearly, the numbers which have 1 or 9 in the unit’s digit, have squares that end in the digit 1. Such numbers from 1 to 70 are 1, 9, 11, 19, 21, 29, 31, 39, 41, 49, 51, 59, 61, 69.

Number of such numbers = 14.
Required percentage = (14/70 * 100) = 20%
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