Insert a digit to make numbers that are divisible by 6 if it is possible: 531__0

For a number to be divisible by 6, the last digit of the number has to be even or 0, and the digits of the number have to add up to a multiple of 6.

Last digit - 0

5+3+1+0=9

Closed multiple to 6 is 12.

12-9=3

3 is the missing digit.

Numbers are evenly divisible by 6 if they are evenly divisible by both 2 and 3. Even numbers are always evenly divisible by 2. Numbers are evenly divisible by 3 if the sum of all the individual digits is evenly divisible by 3. For example, the sum of the digits for the number 3627 is 18, which is evenly divisible by 3 but 3627 is an odd number so the number 3627 is not evenly divisible by 6.

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles