My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Can you identify the hidden rebus in the image below?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

What demands an answer, but asks no questions

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

To attend world science seminar, A famous chemist from Mexico visit
London. In the lab, the scientist was killed and his six assistants were under suspicion of killing the chemist.
Name of six assistants: Austin, Wayne, Dege, Oscaru, Lingard, and Rojo.
He left a note "76-20-44 79-16-22-7"

A local detective Jack was called to solve the case,

After reading the note, Jack instantly asked the police to arrest the murderers.

Who are the murderers?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?