What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

Using Only Five 5's and any mathematical operator make sum as 37

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Replace the question mark with the correct number in the below-given picture?

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

You bought me for dinner but never eat me. What am I?

What is full of holes but still holds water?

Which English verb becomes past tense just by rearranging the letters?