Can someone me to answer this plss.. the melting point of a lead-free solder alloy is 361°f. your adjustable-temperature soldering iron is calibrated in °c. the soldering iron must be at least 100°c hotter than the solder melting point to work effectively. what is the minimum operating temperature for the soldering iron?

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.