If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

Move three sticks of the spiral below to form a square.

What kind of tree can you carry in your hand?

When 99 is considered higher than 100?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

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

Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?