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#1 2022-08-15 07:31:21
- Abbey78336
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- Registered: 2022-08-15
- Posts: 37
Wonderful Base number
A three digit number in base 7 changes to base 9 by reversing their digits what is that number
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#2 2022-08-15 13:40:32
- Jai Ganesh
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- Registered: 2005-06-28
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Re: Wonderful Base number
Hi,
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3 2022-08-16 00:58:12
- Abbey78336
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- Registered: 2022-08-15
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Re: Wonderful Base number
Thanx ganesh
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#4 2022-08-16 19:50:29
- Bob
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- Registered: 2010-06-20
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Re: Wonderful Base number
hi Abbey78336 and Ganesh,
I'm getting another solution:
At this line b = 8(3a - 5c) there are two other posible b values to check, namely b =4 and b = 8
The first does not lead to a solution, but b = 8 does.
I'll leave the rest as an exercise. 
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
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