Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Can you fill the blank with the correct number?

6 30 870 756030 _____

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

Solve the puzzle by telling what does below picture means.

Can you find the key in the picture below?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

What word is represented by this rebus?

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?

The Little ant seems to be always confused. Do you know why?

Can you find out which options fits best with the missing column?