What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Before Balboa discovered the Pacific Ocean, which was the largest ocean before that?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

A river should be crossed by a father, a mother and their two sons and two daughters.
There are some rules that should be followed while crossing the river. There can be only two people in the raft while crossing. The daughters cannot be with their father unless there is the presence of the mother. The sons cannot be with their mothers unless the father is present. Unless the guard is on the board, the criminals cannot be with any of the family members. Only the adults like the father, the guard, and the mother knows to use the raft.

How will they cross the river?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

Which number comes next in the number series?

2, 9, 30, 93, ?