Find the value of "?" in the ball picture Riddle below:

Can you find out the missing number in the grid?

Can you tell a 3D object that has just two surfaces?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

John is on an island and there are three crates of fruit that have washed up in front of him. One crate contains only apples. One crate contains only oranges. The other crate contains both apples and oranges.

Each crate is labelled. One reads 'apples', one reads 'oranges', and one reads 'apples and oranges'. He know that NONE of the crates have been labeled correctly - they are all wrong.

If he can only take out and look at just one of the pieces of fruit from just one of the crates, how can he label all of the crates correctly?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

What can you serve, but never eat?

I am an odd number. Take away a letter and I become even. What number am I?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?

What's the best place to go shopping in the ocean?