How many times can you subtract the number two from the number fifty?

Can you count the number of children in the picture below

Which tank will fill first?

Find the next number in the series below

21 32 54 87 131 ?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

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

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

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