Can you find the key in the picture below?

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

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

Which is the correct shadow of the bird?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

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

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Solve the mathematical equation in the picture below.

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.