Answers to Puzzle Contest #6

I would like to congratulate @doughtaker for being the first person to provide all the correct answers to this contest. I would also like to congratulate the following people for also providing the correct answers.

@singhrajat
@believeme
@funatoz
@mydivathings
@zonguin
@benedicamillius
@ir3k
@xabi
@wilramos
@spydo
@wovlou
@thatindianlady
@sad-dad

Unfortunately, only the first person to provide all the correct answers wins the 20 SBD.

I would also like to thank the following people for participating in this contest.

@firemanvishal
@suheri
@kettleyer
@mr-aaron
@younggirl
@improv
@freedomno1
@shreyansh
@awaischuchi
@mikel2la1
@skpjr001
@freedompoint
@ankarlie
@josediccus
@gusvzla
@belovebelight
@lavanya
@rocking-dave

Here are the answers and explanations for all 4 questions.

Question 1

Question 2

Question 3

Question 4

I will be starting another contest in a few days.