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Divisibility
Test Description: Let's see if you can apply the divisibility rules correctly for the factors of 9,10,11,100,1000 and for 6, 12, 15 etc.
Instructions: Answer all questions to get your test result.
1) 2,304,771,180 is divisible by
A
11
B
15
C
8
D
18
2) 9 is a factor of
A
921
B
111
C
573
D
864
3) 32,444,168 is divisible by 8 because
A
its last digit is divisible by 8
B
168 is divisible by 8
C
68 is divisible by 8
D
the sum of its digits is divisible by 8
4) Which of the following numbers is divisible by 11?
A
4829
B
2489
C
9428
D
8429
5) 465 is divisible by
A
4
B
11
C
15
D
18
6) 17,575 is divisible by 25 because
A
the sum of its digits is 25
B
575 is divisible by 25
C
75 is is divisible by 25
D
its last digit is 5
7) 0 is divisible by
A
every natural number but 0
B
no natural number
C
a total of 9 natural numbers (from 1 to 9)
D
every natural number
8) Every natural number is divisible by
A
0
B
every natural number
C
itself
D
2
9) If n is a number divisible by 4 and 6, n is also divisible by
A
10
B
24
C
18
D
12
10) A natural number of the form 222...22 (consists of 2's only) is divisible by 22. How many digits might it have?
A
66
B
55
C
11
D
33
*select an answer for all questions
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