bewellplus.gsu.edu
Anonymous Anonymous
  • 24-07-2014
  • Mathematics
Answered

Any number that is divisible by 3 is also divisible by 6.

Find a counterexample to show that the conjecture is false.
 21
18
24
12

Verified Answer :

konrad509
konrad509 konrad509
  • 24-07-2014

21/3=7
but
21/6=3.5
.......

Answer Link
Anonymous Anonymous
  • 24-07-2014

21/3 = 7        21/6 = 3.5
18/3 = 6        18/6 = 3
24/3 = 8        24/6 = 4
12/3 = 4        12/6 = 2

Each can be divided to obtain an integer, except:

21/6 = 3.5

So, while 21 can be divided by 3, it cannot be divided by 6 (for an integer anyway)





Answer Link

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