using divisibility tests determine which of the following is divisible by 11 a) 455400 b) 1000001 c) 9130825 please explain it all...
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using divisibility tests determine which of the following is divisible by 11 a) 455400 b) 1000001 c) 9130825 please explain it all...
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A number is divisible by 11 when the alternating sum of the digits and then subtracted are divisible by 11 or equal to 0.
a) 5445
5+4 = 9
4+5 = 9
9-9 = 0
So, 5445 is divisible by 11
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b) 10824
1+8+4 = 13
0+2 = 2
13-2 = 11
So, 10824 is divisible by 11
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c) 7138965
7+3+9+5 = 24
1+8+6 = 15
24-15 = 9
So, 7138965 is not divisible by 11
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d) 70169308
7+1+9+0 = 17
0+6+3+8 = 17
17-17 = 0
So, 70169308 is divisible by 11
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e) 10000001
1+0+0+0 = 1
0+0+0+1 = 1
1-1 = 0
So, 10000001 is divisible by 11
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f) 901153
9+1+5 = 15
0+1+3 = 4
15-4 = 11
So, 901153 is divisible by 11
Answer:
(a) 455400
Step-by-step explanation:
0+4+5=9
0+5+4=9
9-9=0