Harry Potter is at olive Anders MoD shop. As we all know the one must use the wizard so Harry cannot make the choice himself. He interprets the wand selection as a random process so he can determine the probabilities of different outcomes. The wood tops available are Holly, Elm, Maple comma and whinge. The court materials on offer are Phoenix feather, Unicorn hair, dragon scale, Raven feather comma and thestral tail . Let a be the event that Harry is chosen by the wine made of Holly and BB the event that he chosen just leaving work Buy a one with a dragon scale core. What is P (A or B), the probability that Harry is chosen by the one made of holy aura wind with a dragon scale core

Me figure out the process to determine x you appreciate it : )

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

How many 2/5s are in 1 and 1/2 plz someone me right now