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List the pairs of prime numbers less than 100 whose sum is divisible by 10. |
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Answer» All the prime numbers less than 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, 97All the PAIRS of prime numbers whose SUM is divisible by 10 are:3 , 7 3 , 17 3 , 37 3 , 47 3 , 67 3 , 97 7 , 13 7 , 23 7 , 43 7 , 53 7 , 73 7 , 83 11 , 19 11 , 29 11 , 59 11 , 79 11 , 89 13 , 17 13 , 37 13 , 47 13 , 67 13 , 97 17 , 23 17 , 43 17 , 53 17 , 73 17 , 83 19 , 31 19 , 41 19 , 61 19 , 71 23 , 37 23 , 47 23 , 67 23 , 97 29 , 31 29 , 41 29 , 61 29 , 71 31 , 59 31 , 79 31 , 89 37 , 43 37 , 53 37 , 73 37 , 83 41 , 59 41 , 79 41 , 89 43 , 47 43 , 67 43 , 97 47 , 53 47 , 73 47 , 83 53 , 67 53 , 97 59 , 61 59 , 71 61 , 79 61 , 89 67 , 73 67 , 83 71 , 79 71 , 89 73 , 97 83 , 97 TOTAL such pairs are = 67 |
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