In Russia, when flowers are given for a romantic occasions, flowers are given in odds numbers as even number of flowers is given at funerals only.

2,520 can be divided by 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 without having a fractional leftover.

Most rechargeable batteries can be recharged up to 1,000 times.

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