Question

What percentage of the number from 1 to 50 have Square that end in digit 1?​

Answer 1

Answer:

Step-by-step explanation:

Explanation: 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.

Answer 2

Squares till 50 that end in 1= 1

Thus,

Percentage= 1/50 * 100 %= 2%