Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

What goes through cities and fields, but never moves?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

What word does this rebus represent?

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Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

Find the value of "?" in the ball picture Riddle below:

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Spot 5 differences in two Christmas tree below: