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Column Bases (Posted on 2004-12-15) Difficulty: 3 of 5
All of the following relationships are correct, except one. Determine the wrong answer and explain why the others are correct.
A) 5612 ~ 1475
B) 4657 ~ 1210
C) 4326 ~ 1080
D) 2474 ~ 755
E) 1781 ~ 737

See The Solution Submitted by Juggler    
Rating: 3.0000 (3 votes)

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Solution Puzzle Solution Comment 8 of 8 |
The thousands, hundreds, tens and ones  column are expressed in non decimal bases, where:
Thousands column => base 6
Hundreds column => base 8
Tens column => base 9
Ones column => base n, where 1<=n<=7

Then, we observe that:

(A) 5612 --->  5*6^3 + 6*8^2 + 1*9 + 2 = 1475 in base ten
(B) 4657 --->  4*6^3 + 6*8^2 + 5*9 + 7 = 1300 in base ten
(C) 4326 --->  4*6^3 + 3*8^2 + 2*9 + 6 = 1080 in base ten
(D) 2474 --->  2*6^3 + 4*8^2 + 7*9 + 4 =  755 in base ten
(E) 1781 --->  1*6^3 + 7*8^2 + 8*9 + 1 =  737 in base ten

Since, (B) does not provide the value of 1300 in base ten, it follows that B has the wrong answer.

Edited on August 21, 2023, 8:22 am
  Posted by K Sengupta on 2023-01-05 22:44:35

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