P(d)=log(d+1)−log(d)property you use to rewrite the expression as a single logarithm What’s the probability that1 is the leading digit?

Jackie took a piece of paper and wrote all the numbers from 300 to 400 on it. how many times did she write the digit 3?

Digit 5 in the thousands place the number 2,145,857,how does the compare to the digit 5 in the tens place ?

If the international community can agree on using “thin space” for digit grouping, why haven’t they come up with a unified decimal mark?