Can you fill the blank with the correct number?

6 30 870 756030 _____

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

What kind of band never plays music?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

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

Imagine you are in a room with no windows or doors. How will you get out?

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

What is 3/7 chicken, 2/3 cat and 2/4 goat?