When it's bad luck to meet a black cat?

You can see three almost identical images below. Can you spot the odd one out from them?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

Find the smallest sentence with all the English alphabet.

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

Look at the picture and find out which square is not linked with any of the other squares.

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

Can you make four (4) nines (9) equal 100?