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This week’s brain teaser
Solve the following with the conditions given:
DA – BC = BD
a) All the numbers used A, B, C and D are prime
b) The answer BD is also a prime number
c) The numbers DA and BC are not prime
d) Also the number A < C
Find the numbers A, B, C and D
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A = 2
B = 3
C = 5
D = 7
DA ( 72 ) – BC ( 35 ) = BD ( 37 )
Not Prime: 72, 35
Prime: 37
Just to clarify, the pairs (B & D, D & A, B & C) represent individual numbers not multiples.