Some one plz me. im stuck on both questions. ppl plz do not delete question. if you dont want to answer than dont. but extra points and branlist for first question

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

The probability that you roll a two on a six-sided die is 1 6 16 . if you roll the die 60 times, how many twos can you expect to roll

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.