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How many fingers do you have in your both hand?

I have 8 fingers and 2 thumbs in both hand.

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There is a bucket with lots of marbles. Some are red, some are blue, some are green and some are orange. We dont know the quantity of any. With your closed eyes how many minimum number of marbles you will pick so as to 100% sure that atleast 2 marbles have the same colors?	The value of (222) in base X when converted to base 10 is P. The value of (222) in base Y when converted to base 10 is Q. If the value of (P - Q) in base 10 = 28, then what is the value of (Q - X) in base 10? a) 80 b) 108 c) 92 d) Cannot be determined