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A duck number is a positive number that contains zeros, but the zeros cannot be at the beginning of the number. To check if a number is a duck number, convert it to a string and verify that it starts with a non-zero digit while also containing at least one zero elsewhere in the string. If both conditions are met, the number is a duck number. For example, 1023 is a duck number, while 0231 is not.

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1mo ago

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How do you find a duck number?

A duck number is defined as a positive number that has zeroes present in it but does not start with a zero. To determine if a number is a duck number, check its digits: if it contains at least one '0' and the first digit is not '0', then it qualifies as a duck number. For example, 1023 and 507 are duck numbers, while 0123 and 1230 are not.


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