Seeing the value of the digit at unit's place, state which of the following can be square of a number ?

(i) 3051

(ii) 2332

(iii) 5684

(iv) 6908

(v) 50699

Squares of which of the following numbers will have 1 (one) at their unit's place ?

(i) 57

(ii) 81

(iii) 139

(iv) 73

(v) 64

Squares of which of the following numbers will not have 6 at their unit's place ?

(i) 35

(ii) 23

(iii) 64

(iv) 76

(v) 98

Which of the following numbers will have 6 at their unit's place :

(i) 26²

(ii) 49²

(iii) 34²

(iv) 43²

(v) 244²