Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Prove that twice of ten is the same as twice of eleven.

Which is the smallest number that you can write using all the vowels exactly once?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

What shoe company does this rebus represent?

Which is faster, Heat or Cold ? Explain.

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

What demands an answer, but asks no questions

What does this mean?

CCCCCCC

There is a dressing drawer which contains the following coloured socks in pairs: Purple, Magenta, Crimson, White, Yellow and Turquoise. Now, the socks are paired and each pair is together in the matching set. There is no light in the room and you open the drawer and pick up a pair. Then, without noticing any colour, you keep them back and pick them up again.

Can you calculate the probability that the pair of socks was Yellow both times?