Question

1. What could be the possible digits at the ones place of
the square root of the following numbers?
(i) 11916304 (ii) 10452289 (iii) 103041
please step by step explantion​

Answer 1

Answer:

Step-by-step explanation:

1) 2,8

since 2^2=4

and   8^2=64

and no other number from 1-9 has its square ending with 4,

Therefore, any number ending with digit 4 needs to have its square root with a 2 or 8  digit

2) 3,7

since 3^2=9

and   7^2=49

and no other number from 1-9 has its square ending with 9,

Therefore, any number ending with digit 9 needs to have its square root with a 3 or 7 digit

3) 1,9

since 1^2=1

and   9^2=81

and no other number from 1-9 has its square ending with 1,

Therefore, any number ending with digit 1 needs to have its square root with a  1 or 9 digit

Answer 2

Answer:

the possibilities are as follows:

1) 11916304

the ones digit number will possibly be 6.

2) 10452289

the ones digit number will possibly be 1.

3) 103041

the ones digit number will possibly be 1.

Explanation:

Square the last digit of the number, the number you get is your answer.

For 1 and 9, the ones digit will be always 1.

2 and 8, the ones digit will be always be 4.

3 and 7, the ones digit will be always be 9.

4 and 6, the ones digit will be always be 6.

For 5, it will always be 5.