Testing for Divisibility (Without using a Calculator!)

Test the following for divisibility by 2,3,4,5,6,8,9,and 10. (No calculator, explain your thinking).

i. 6 543 210

b. What is the smallest whole number that is divisible by 2,3,4,5,6,8,9 and 10.

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Test the following for divisibility by 2,3,4,5,6,8,9,and 10. (No calculator, explain your thinking.

i. 6 543 210

Analysis. Obviously, since it is divisible by 10, it is divisible by 2 and 5 as well. Since 6543210=654321*10 and 654321 is an odd number, we ...

Divisibility of a large number is tested, without using a calcualtor. The results are explained in detail.

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