Can you spot the man between the coffee bean in the picture below ?

Solve the riddle below:

If a Chicken says, 'All chickens are liars" is the chicken telling the truth?

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?

If eleven plus two equals one, what does nine plus five equal?

What does the below mathematical rebus mean?

Thomas has missed an excessive number of days of school, so he must meet with Principal Davis. Mr. Davis asks him "Why on Earth have you missed so many days?" Thomas replies "There just isn't enough time for school. I need 8 hours of sleep a day, which adds up to about 122 days a year. Weekends off is 104 days a year. Summer vacation is about 60 days. If I spend about an hour on each meal, that's 3 hours a day or 45 days a year. I need at least 2 hours of exercise and relaxation time each day to stay physically and mentally fit, adding another 30 days. Add all of that up and you get about 361 days. That only leaves 4 days for school." The principal knows Thomas is full of it, but can't figure out why. Where is Thomas going wrong?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

What seven-letter word has hundreds of letters in it?

What word is pronounced the same if you take away four of its five letters?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?