Question

13. Find the next item in the pattern 2, 3, 5, 7, 11, ...
Select one:
a. 17
b. 13
c. 15
d. 12

15.Show that the conjecture is false by finding a counterexample.
If a>b then a/b >0
Select one:
a. a = 11,b = 3
b. a = 11,b = -3
c. a = 3 , b = 11
d. a = -11, b = 3

Answer 1

help please!

Answer 2

13. hint : prime numbers