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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?
Wiki User
∙ 13y ago
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.
Wiki User
∙ 13y ago
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50 50 odd or even same probability
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1/3
A number is chosen at random from the first 10 whole number What is the probability that it is not exactly divisible by 3?
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What is the probability that a randomly chosen number is not divisible by 2 3 or 6?
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What the probability of rolling a 6 sided die and getting a 4 or a number divisible by 3?
If the die is fair then for a single roll, the probability is 1/2.
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1/3
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