I am an odd number. Take away a letter and I become even. What number am I?

What can you deduce from the following BrainBat?

CRY
LMKI

What does this rebus means ?

PROG WORKRESS

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

Count the number of balls in picture below:

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?