What will be the ones digit in the squares of the following numbers?

(a)

36

(b)

252

(c)

543

Study the given numbers and justify why each of them obviously cannot be a perfect square.

(a)

1000

(b)

34567

(c)

408

\(\\ \sqrt { 48 } \) is approximately equal to

(a)

5

(b)

6

(c)

7

(d)

8

\(\sqrt { 128 } -\sqrt { 98 } +\sqrt { 18 } =\) 

(a)

\(\sqrt { 2 } \)

(b)

\(\sqrt { 8 } \)

(c)

\(\sqrt { 48 } \)

(d)

\(\sqrt { 32 } \)

\(\sqrt { 22+\sqrt { 7 } +\sqrt { 4 } } \) =

(a)

\(\sqrt { 25 } \)

(b)

\(\sqrt { 33 } \)

(c)

\(\sqrt { 31 } \)

(d)

\(\sqrt { 29 } \)