please help with this question

Let us play with 10sided dice, numbered from 110. Note that these are fair dice. Please write answers to at most 3 decimal places and without extra zeros, e.g., 0.5 should not be entered as 0.50. a} What is the probability of rolling a number greater than 7? ':| b} What is the probability of rolling a number greater than 8, then rolling an odd number? c} If four dice are rolled together, what is the probability of exactly two dice rolling 8 or higher? d} If ve dice are rolled together, what is the probability at least two dice rolling 8 or higher? e} Rolling one dice multiple times, what is the probability of rolling 8 or higher for the rst time on the third roll