Mind Challenge - 5 Brain teasers for the week

[dairolozano]

Funny braingames.  Please answer below in comments. 

• The day before yesterday,  a girl was 7 years old but  next year she'll turn 10. How's it possible?

• You’re standing in a hallway with three light switches on the wall, each of which turns on a different lamp inside a closed room. You can’t see inside the room, and you can’t open the door except to enter the room. You can enter the room only once, and when you do, all the lamps must be turned off. How can you tell which switch turns on which lamp?

• What makes this number unique — 8,549,176,320?

• In which direction is this Bus heading ? Left or Right ?

• Two boxers are in a match scheduled for 12 rounds. (Pure boxing only – no kicking, UFC takedowns, or anything else). One of the boxers gets knocked out after only six rounds, yet no man throws a punch. How is this possible?
  

[sarat_malladi]

4. right

[Former Member]

1. Today is 01.01, girl's birthday is on the 31.12

2. One switch on, wait and then off, one on and off quickly, one don't touch. Hot lamp is the first, warm is the second, cold is the third. But those should be old "pear" lamps.

3. All numbers 0 - 9

4. In what country?

5. "Man" means "male" here?