Question

Exercise 6.1
1
What will be the unit digit of the squares of the fol
(i) 81.
(ii) 272
(iii) 799
(v) 1234 (vi) 26387
(vii) 520
(ix) 12796 (x) 55555
2. The following numbers are obviously not perfect
(i) 1057
(ii) 23453
(iii) 799
(v) 64000 (vi) 89722
(vii) 22
3. The squares of which of the following would be
(1) 431 (ii) 2826 (iii) 7779​

Answer 1

Answer:

1.

(i) 1

(ii) 4

(iii) 1

(v) 6

(vi) 9

(vii) 0

(ix) 6

(x) 5

2.

(i) No

(ii) No

(iii) No

(v) No

(vi)  No

(vii) No

3.

(i) 185761

(ii) 7986276

(iii) 60512841