Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

What is common among 11, 69, and 88?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

Identify the hidden meaning behind this picture?

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

Rumel, A detective who was mere days from cracking an international smuggling ring has suddenly gone missing. While inspecting his last-known location, you find a note:

710 57735 34 5508 51 7718

Currently, there are 3 suspects: Bill, John, and Todd. Can you break the detective's code and find the criminal's name?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?