Why are all black people so quick ?

What does this rebus photo means?

Count the number of triangles in the below picture?

What has a ring but no finger?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

A mother bought three dress for her triplets daughters(one for each) and put the dresses in the dark. One by one the girls come and pick a dress.
What is the probability that no girl will choose her own dress?

Keyboard words are not in alphabetical order, Why?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

You can see three almost identical images below. Can you spot the odd one out from them?