This answer has been send by Dr. Mowaffaq Hanandeh from KAFD Jordan A. ( 9*6)+19=73 B. (6*9)+13=67 C. (8*7)+? =71 then 56+?=71 Then ? = 15
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73.
The prime numbers from 1-73 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, and 73.
11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73
The prime numbers between 60 and 80 are 61, 67, 71, and 73.
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97
There are 17 prime numbers between 5 and 73: 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71.
The prime numbers between 65 and 75 are: 67, 71 and 73
67, 71, 73.
67 or 71
The prime numbers between 1 and 100 are: 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97. 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
They are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89 and 97.
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 972, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97