Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

What Time Should the last watch show in the below figure?

What Adam and Eve do not have but the rest of the people have?

You can hear me, but you can't touch or see me.

What am I?

Find the missing number in the sequence below:

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 two's company, and three's a crowd, then whats four and five ?

The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

Can you make a six-letter word using the letters N, A and B ?

Can you solve the below geography rebus by decoding the below rebus ?