 |
| ||
| |||
|
| Math Central | Quandaries & Queries |
|
Question from parth, a student: the 6 digit # 63x904 is an even multiple of 27 what is x |
Hi,
$27 = 3 \times 9$ so $63x904$ is divisible by $9.$ If an integer is divisible by $9$ the sum of its digits is divisible by $9$ so
\[6 + 3 + x + 9 + 0 + 4\]
is divisible by 9, and x is an integer. What is x?
Penny
| ||
| ||
| ||
 |
 |
|
Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.