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?

What does below pictogram mean?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

Find the value of "?" in the ball picture Riddle below:

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

Can you count the number of lines in the below picture?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?