Solution:

Wise you are, wise you be, I see you are too wise for Me

Solution:

Now there can be two solutions to the given situation because there can be two situations:
Suppose if B and C have same colors, A will know that his color is the other one and he will be able to speak up the first.
Now if B and C do not have same colors, A will stay silent. This will tell B that his and C's colors are different. Thus he will speak up first.

So either A or B will speak up first depending on the situation.

Solution:

zero

I had 3 green socks and 1 Pink sock.

=> chances of pair of green socks = 1/2
chances of pair of mixed socks = 1/2
chances of pair of green socks = NULL

Solution:

9

Explanation:
2 < 3 < 5
To find out the required number of candies, take one in place of the least number (i.e. take one mango candy) and then add all the greater numbers (i.e. three strawberry and five pineapple candies) to it.

Required number of balls = 1 + 3 + 5 = 9.

Solution:

See the figure for the answer. Wasn't it a bit tricky?

Solution:

Since the door is not visible in this picture, the bus is moving in the left direction.

Solution:

Baseball umpire and the Catcher (Eden Hazard was playing baseball.)

Solution:

2003.

Explanation:
Its a series of prime numbes.

Solution:

A cigar stuck in the wall

Solution:

5 leopard and one sheep

since all animal are rational , once 1st leopard eats the sheep all the rest of leopard would know about this.

Solution:

They used the planks in the manner that is shown in the figure.