If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

What came first, the chicken or the egg?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

A gardener planted the Lemon trees in a mathematical ordered way (i.e. he planted a tree in rows).
He created a total of 19 rows of trees.

Note: There should be more than 2 trees to count as a row.

What is the minimum number of trees required by the gardener to have 19 rows of trees?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?