Can you identify if it's a murder or a suicide ?

What does this mathematical rebus means ?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

What does this rebus means ?

When it is alive we sing, when it is dead we clap our hands. What is it?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

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 ?

What English word has three consecutive double letters?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What is next number in the pattern below:

131 517 192 123 ?