+0  
 
0
31
2
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How many two-digit numbers have non-zero digits whose sum is prime?

 Jun 8, 2022
 #1
avatar+123309 
+1

If I didn't miss any  !!!!

 

11, 12, 14, 16

21 , 23 , 25, 29

32 , 34, 38

41, 43, 47 , 49

52, 56, 58

61, 65, 67

74, 76

83, 85, 89

92, 94, 98

 

 

 

cool cool cool

 Jun 8, 2022
 #2
avatar+39 
0
Nope, I don't think so! That means our final answer would be 29. :)
Hamburger  Jun 9, 2022

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