Answer:
7. 5
8. 4 or 5
9. 3 or 4
10. 4
11. 1 or 2 or 3 or 4
12. 6
Explanation:
7. 5
8. 4 (excluding the 0) or 5 (including the 0)
9. 3 (excluding the 0 at the back) or 4 (including the 0 at the back)
10. 4
11. 1 or 2 or 3 or 4 (according to the number or 0s included)
12. 13.04 × 104 = 1356.16
ans: 6
