How many prime numbers exist between:
A) 1 and 10?
B) 1 and 20?
C) 20 and 40?
D) 40 and 80?
E) 80 and 100?
Dear Student,
Please find below the solution to the asked query:
We know : A prime number is a whole number greater than 1 whose only factors are 1 and itself.
Prime numbers in between :
A) 1 and 10 = 2 , 3 , 5 , 7 , So there are four prime numbers in between 1 and 10 .
B) 1 and 20 = 2 , 3 , 5 , 7 , 11 , 13 , 17 , 19 , So there are eight prime numbers in between 1 and 20 .
C) 20 and 40 = 11 , 13 , 17 , 19 , 23 , 29 , 31 , 37 , So there are eight prime numbers in between 20 and 40 .
D) 40 and 80 = 41 , 43 , 47 , 53 , 59 , 61 , 67 , 71 , 73 , 79 , So there are ten prime numbers in between 40 and 80 .
E) 80 and 100 = 83 , 89 , 97 , So there are three prime numbers in between 80 and 100 .
Hope this information will clear your doubts about topic.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards
Please find below the solution to the asked query:
We know : A prime number is a whole number greater than 1 whose only factors are 1 and itself.
Prime numbers in between :
A) 1 and 10 = 2 , 3 , 5 , 7 , So there are four prime numbers in between 1 and 10 .
B) 1 and 20 = 2 , 3 , 5 , 7 , 11 , 13 , 17 , 19 , So there are eight prime numbers in between 1 and 20 .
C) 20 and 40 = 11 , 13 , 17 , 19 , 23 , 29 , 31 , 37 , So there are eight prime numbers in between 20 and 40 .
D) 40 and 80 = 41 , 43 , 47 , 53 , 59 , 61 , 67 , 71 , 73 , 79 , So there are ten prime numbers in between 40 and 80 .
E) 80 and 100 = 83 , 89 , 97 , So there are three prime numbers in between 80 and 100 .
Hope this information will clear your doubts about topic.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards