What is so fragile that saying its name breaks it?

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.

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

What do you get if you add 2 to 100 four times?

Move four matchsticks to the below square to form three squares?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

Name a key which is hardest to turn.

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?