Which of the below owl is odd one out?

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

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?