Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

A man is walking down a road with a basket of eggs. As he
is walking he meets someone who buys one-half of his eggs
plus one-half of an egg.
He walks a little further and meets another person who buys
one-half of his eggs plus one-half of an egg.
After proceeding further he meets another person who buys
one-half of his eggs plus one half an egg. At this point, he
has sold all of his eggs, and he never broke an egg.
How many eggs did the man have to start with?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

When it's bad luck to meet a black cat?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Can you start the fire using two pieces of wood?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

What is full of holes but still holds water?

Can you solve the photo plexer logic ?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?