Question

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 1

Answer:

20%

Aptitude :: Percentage - Discussion

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. % = 20%.

Step-by-step explanation:

i hope this answer is right

Answer 2

Answer:

here is your answer

c is the correct answer

Step-by-step explanation:

please mark as brain list answer and follow