What is the next number in the series?

15 29 56 108 208 ?

What kind of tree can you carry in your hand?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

No matter how little or how much you use me, you change me every month. What am I?