sandeep throws a dice 180 times. the dice lands 72 times on a 2.how many times should the dice land on two if the dice is fair? PLEASE HELP ITS DUE TOMORROW!!!​

The half-life of a certain material is 0.002 second. approximately how much of a 14-gram sample will be left after 0.004 second? a. 12 grams b. 3.5 grams c. 0.06 gram d. 7 grams