Complete the table series riddle by finding the number that can replace "??".

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Can you start the fire using two pieces of wood?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?

Identify the hidden meaning behind this picture?

Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.

The day after tomorrow will be three days before Tuesday. Can you find out what is today?