Square root of 666*667*668*669+1

Q.

What will be the units digit of the squares of the following numbers:​

71, 669, 2539, 30821?

A. 1

B. 9

C. 3

D. 8

Q.

What will be the units digit of the squares of the following numbers?

(a) 71 (b) 669 (c) 2533 (d) 30,827

Q. Write the following in symbols:

(1) The positive square root of 400
(2) The negative square root of 81
(3) The negative square root of 121
(4) The positive square root of 1

Q.

What will be the units digit of the squares of the following numbers?

(a) 71 (b) 669 (c) 2533 (d) 30,827

A) 1 and 9
B) 4 and 6
C) 4 and 8
D) 6 and 8