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Ques:- What percentage of numbers from 1 to 70 have squares that end in the digit 1?
A. 1
B. 14
C. 20
D. 21
Ques:- Find out the wrong number in a given series.
263, 284, 393, 481, 482
263, 284, 393, 481, 482
A. 482
B. 481
C. 393
D. 284