Round 63,859 to the nearest ten, to the nearest hundred, to the nearest thousand, and to the nearest ten thousand

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

Me find the value of x each figure.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.