can someone answer this questions plz. is do 2more-o?

Question

1. a0/a-3
2. 1/r-5
3. k-3/k6
4. m6/m-8
5. (b8c4)/(b3c6)
6. (10b8)/(2b6)
7. (15m5)/(45m)
8. (x4y7)/(x2y2)
9. (b6c5)/(b10c12)
10. (r5s8)/(r5s7)
11.(60x4y7)/(-6x13y2)
12.(12bc4)/(-4b3c)
13. (33a2b5c7)/(11abc2)
14. (24x2y7z6)/(6x2y3z6)
15. (9x3z5)/(4z15)
16. (18a5b5c10)/(15a5c15)
17.(r-6s-2)/[(r2s6)-1]
18. [(r-4k2)2]/[(4k2)2]
19. [(-b-2c)0]/(8a-1c2)
20. [(a5b2)2]/[(a-3b)2]

Answer 1

When you multiply, add exponents on letters and multiply numbers as usual. When you divide, subtract exponents on letters and divide numbers as usual.. Anything to the 0 power = 1