what does this picture(rebus) riddle means ?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Find the number of squares in the below picture

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 breaks yet never falls, and what falls yet never breaks?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).

12345 a famous South Indian actor
567 is a path in jumbled form
8 & 10 are same letters
9 is one among the first six alphabets.
WHO AM I?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Find the missing number in the sequence below: