Friday Riddle / Teaser - ANSWER
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nudgie
CSN Member Posts: 1,478 Member
RIDDLE: The numbers 2 and 5 are the only two prime numbers that end 2 or 5. What is the rationale for the following group of numbers:
3 17 31 47 61
7 19 37 49 67
11 23 41 53 71
13 29 43 59 73
ANSWER: The numbers are grouped by column according to their BINGO letters (B=1 through 15, I = 16 through 30, N = 31 through 45, G = 46 through 60, O = 61 through 75)
3 17 31 47 61
7 19 37 49 67
11 23 41 53 71
13 29 43 59 73
ANSWER: The numbers are grouped by column according to their BINGO letters (B=1 through 15, I = 16 through 30, N = 31 through 45, G = 46 through 60, O = 61 through 75)
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