That is Correct. Well Done
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You and a good friend go out and have a nice dinner together, and the bill is $25. You and your friend each pay $15 in cash which your Waiter gives to the Cashier. The Cashier hands back $5 to the Waiter. The Waiter keeps $3 as a tip and hands back $1 to each of you. So, you and your friend paid $14 each for the meal, for a total of $28. The Waiter has $3, and that makes $31. Where did the extra dollar come from?
You're standing at three light switches at the bottom of stairs to the attic. Each one corresponds to one of three lights in the attic, but you cannot see the lights from where you stand. You can turn the switches on and off and leave them in any position. How can you identify which switch corresponds to which light bulb if you are only allowed one trip upstairs?
Turn on switch 1 & 2 for a couple of minutes.
Turn off switch 1 and immediately head upstairs.
You will now have 1 light on (switch 2) and two lights off (switches 1 & 3)
Feel the globes for whichever one is still warm, and that's switch 1.
The cold globe is switch 3.
This one took some thinking!
Baggie
If you are in a dark room with a candle, a wood stove and a gas lamp. You only have one match, so what do you light first?
The match hahahahahaahahahahhahahaha
If I took 12 apples from a pile of 23 apples, how many apples would I have?