I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

How many triangles can you find in this given picture?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

What is full of holes but still holds water?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _