Can you solve the below tricky visual equation?

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

I throw two dice simultaneously.

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

Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

What does this rebus mean?

O
N
C
E
TIME

Which five letter word can be added at the end of below word to form a
valid word?

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Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?