Comprehension Passage
Directions: These questions are based on the following arrangement of numbers. Read it carefully and answer the questions:
1 2 3 4 5 6 7 8 9 11 13 15 17 19 21 23 27 29 32 34 36 38 40
How many elements from the arrangement are prime number?
1
5
2
10
3
7
4
6
5
Either 7 or 8