Find the hidden tiger in the given optical illusion ?

Find out the missing number in the picture attached:

If 1+9+8=1, what is 2+8+9?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

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?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

If two's company, and three's a crowd, then whats four and five ?