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

If the square of a number ends with 10 zeroes, how many zeroes will the number have ?

Is it possible for the square of a number to end with 5 zeroes ? Give reason.