Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

I shave every day, but my beard stays the same. What am I?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

What do you see in the given picture?