Question

The following numbers are obviously not perfect squares. Give reason
(1) 1057
(m) 23453
(m) 7928
(iv) 222222
(v) 64000 (vi) 89722 (vii) 222000 (vm) 505050​

Answer 1

$\color{maroon}{\bigstar}\huge{\underline{\underline{\boxed{\sf{ \color{deeppink}{ \red{❥} Solution:\color{aqua}࿐}}}}}}$

$\space$

We know that natural numbers ending in the digits 0, 2, 3, 7 and 8 are not perfect squares.

i. 1057 ⟹ Ends with 7

ii. 23453 ⟹ Ends with 3

iii. 7928 ⟹ Ends with 8

iv. 222222 ⟹ Ends with 2

v. 64000 ⟹ Ends with 0

vi. 89722 ⟹ Ends with 2

vii. 222000 ⟹ Ends with 0

viii. 505050 ⟹ Ends with 0

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

hope it helps! :D