What does this rebus means ?

PROG WORKRESS

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

Why is it very easy to weigh a fish?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

There is something which you can be arrested for attempting but not for successfully completing.