 | Education - 1901 - 562 pages
...number is divisible by 8 when the number represented by the last three digits is divisible by 8. 8. A number is divisible by 9 when the sum of its digits is divisible by 9. 9. A number ending in 0 is divisible by 10. 10. A number is divisible by 11, when the difference between... | |
 | Great Britain. Parliament. House of Commons - Great Britain - 1878 - 634 pages
...row at random ; what is the chance that three specified coins will be together ? 10. Prove that any number is divisible by 9 when the sum of its digits is divisible by 9. Explain the method of casting out the nines, in order to test the accuracy of the multiplication of... | |
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A number is divisible by 3 when the sum of its digits (figures) is divisible by 3 ; it is divisible by 9, when the sum of its digits is divisible by 9. 
