Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

John can eat 27 chocolates in an hour, Jacob can eat 2 chocolates in 10 minutes, and Jolly can eat 7 chocolates in 20 minutes. How long will it take them to share and eat a box of 120 chocolates whilst playing Chess?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

Can you divide the below-given shape into four equal and identical pieces?

Can you find the hidden animal in the picture below?

What goes through cities and fields, but never moves?

There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
Note, at the center, there is a bug which starts flying towards Car A at time T(0). When the bug reaches car B, it turns back and starts moving towards the car A. The speed of bug is 1m/second. After 5 hours all three stop moving.
What is the total distance covered by the bug?

Why is 6 afraid of 7?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

I know a nine-letter word having only one vowel.
Do you ?