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QOTD#6 The tens digit is missing from the three-digit number
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10 Jul 2016, 15:55
10 Jul 2016, 15:55
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Question Stats:
80% (01:14) correct
19% (00:46) wrong based on 78 sessions
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The tens digit is missing from the three-digit number 8 __ 9. If the tens digit is to be randomly selected from the ten different digits from 0 to 9, what is the probability that the resulting three-digit number will be a multiple of 9?
(A) 0.1
(B) 0.2
(C) 0.4
(D) 0.9
(E) 1
(A) 0.1
(B) 0.2
(C) 0.4
(D) 0.9
(E) 1
Re: QOTD#6 The tens digit is missing from the three-digit number
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10 Jul 2016, 23:19
10 Jul 2016, 23:19
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Re: QOTD#6 The tens digit is missing from the three-digit number
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11 Jul 2016, 04:42
11 Jul 2016, 04:42
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if 8_9 be divisible by 9 then the sum should be divisible by 9. 8+9 = 17. The only number that fits the blank is 1. So the probability is 1/10
