What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Forwards I am heavy, backward I am not. What am I?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

how come the second man dies?

Find the missing number in the sequence below:

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.