Question

What percentage of the numbers from 1 to 50 have squares that end in the digit 1?
(a) 10
(b) 5
(c) 11
(d) 20​

Answer 1

Step-by-step explanation:

unit's digit end in the digit 1. Such numbers are,1,9,11,19,21,29,31,39,41,49

Answer 2

Answer:

20%

Step-by-step explanation:

the numbers which lie are 1,9,11,19,21,29,31,39,41,49

these are 10 numbers

now to calculate percentage 10/50*100=20

so answer is 20