In the image below, can you find the value of an angle(y)

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What does below chemistry rebus means?

Something Extraordinary happened on May 6th 19778 at 12:34am what was that?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

A.Edwin is taller than Jurgen
B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

People put me on the table and cut me but do not eat me. What am I?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.