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Earn +20 ptsQ: What is the probability of 7 digits?
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If a number is chosen at random from all four digit palindromes what is the probability that it is divisible by seven?
1001 is the lowest four-digit palindrome, which is 0 modulus 7. Adding one to the first and last digits adds 0 modulus 7. Adding one to the second and third digits adds 5 modulus 7, since 110 is also 5 modulus 7. So only 770 plus multiples of 1001 are divisible by 7. Out of 90 possibilities, there are only 9 that are divisible by 7. So the probability is 9/90, or 1/10.
What is the probability of 30 numbered cards What is the probability of picking 7?
P(7)= 1/30
What is the probability of a four digit telephone extension has one or more repeated digits?
6561
What is the probability of rolling a 7 with one roll of standard number cube?
The probability is 0.The probability is 0.The probability is 0.The probability is 0.
How many digits in a million in US?
It is used in whole world.7 digits.1K=103 1,000 -------->4 digits.1M=106 1,000,000. ------>7 digits.
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