What does this rebus means ?

PROG WORKRESS

What goes through cities and fields, but never moves?

Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

John bought a new car. He has a habit of eating ice cream from a particular ice cream shop while returning home from office. Whenever, he eats strawberry ice cream, he faces no problem. But whenever, he eats chocolate ice cream, the car starts giving problem. At first, he thinks, it is just a co-incidence but when this awkward incident happens for 3-4 times, he reports this problem to the company.

The mechanic of the company checks but finds no problem at all. The next day, when he stops by to eat chocolate ice cream, the car again starts giving problem.

Can you find the possible reason?

What breaks yet never falls, and what falls yet never breaks?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

I am lying and I always lie. Tell me whether I am lying or telling the truth.