Identify the 10 differences between the two given pictures.

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

What is next number in the pattern below:

131 517 192 123 ?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

Count the number of lines in the image below ?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?