Asked by B.B.
I do not understand this problem can somebody please help me with it? Fill in the missing digits in as many ways as possible so the number will be divisible by 6.
3 _ 2 _ Thanks for the help.
3 _ 2 _ Thanks for the help.
Answers
Answered by
MathMate
As you already know, For the number to be divisible, it has to be divisible by 2 and by 3.
Divisble by 2 means that the last digit must be even (2,4,6,8,0).
Divisible by three means that the sum of the digits must add up to a multiple of 3.
So start with the last digit as 2, and fill in the second digit with all possible answers (2,5,8).
Repeat the same using 4 as the last digit, and find the possible answers for the second digit (3, 6, 9).
Now repeat 6,8,0 successively for the last digit and repeat the above.
You should have a total of 5*3=15 numbers.
Divisble by 2 means that the last digit must be even (2,4,6,8,0).
Divisible by three means that the sum of the digits must add up to a multiple of 3.
So start with the last digit as 2, and fill in the second digit with all possible answers (2,5,8).
Repeat the same using 4 as the last digit, and find the possible answers for the second digit (3, 6, 9).
Now repeat 6,8,0 successively for the last digit and repeat the above.
You should have a total of 5*3=15 numbers.
Answered by
Sarah
I have a total of 16 numbers not 15 and I have double checked my answers
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