Question

which are the prime nos exist between a] 1 and 10 b] 1 and 20 c] 20 and 40 d] 40 and 80 e] 80 and 100

Answer 1

a] 1,2,3,5,7
b] 1,2,3,5,7,11,13,17,19
c] 23,29,31,37
d] 41,43,47,53,59,61,67,71,73,79
e] 83,89,97