When is 99 more than 100

When is 99 more than 100?

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30 cows and 28 chickens

There are 30 cows in a field, and 28 chickens. How many didn’t?

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A man was found murdered on sunday morning

A man is found murdered on Sunday morning. His wife calls the police immediately. The police question the wife and staff.
The wife said she was asleep,
the cook said he was cooking breakfast,
the gardener said she was picking vegetables,
the butler said he was cleaning the closet,
and the maid said she was getting the post.

The police immediately arrested the murderer. Who was the murderer?

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