Which Travels Faster? Solve below famous picture riddle:

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

What is black when you buy it, red when you use it, and gray when you throw it away?

Which word does the below Plexor means ?

A man fell off a smuggling boat into deep water. He could not swim and he was not wearing anything to keep him afloat. It took 30 minutes for the people on the boat to realize someone was missing. The missing man was rescued two hours later on the return trip. Why didn't he drown? Note:- He didn't know swimming, the sea was deep, and He wasn't holding anything

Akbar called Birbal and asked him to draw a line on the floor. He asked Birbal to make that line smaller without erasing it. Birbal smiled and did it before Akbar could blink his eyes.

How did he managed to do it?

How is a fly different from a mosquito?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?