Can you find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

Find the next number in the series below.

6 18 270 72090 ?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

Can you find the mistake in the below statement?

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.

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

Replace The Question Mark Below With the Correct Number.

2 {38} 3
4 {1524} 5
6 {3548} 7
8 {????} 9

81 x 9 = 801. What must you do to make the this equation true?