It's a easy question,but hard to answer.
1 simple interest:1000*6%*5
compound interest:1000*(1+6%)*E5 (compound interest yearly)
2 1000*(1+6%/4)*E60
3 simple interest:100*5%*3
compound interest semiannually:100*(1+5%/2)*E6
compound interest semiannually:100*(1+5%/4)*E12