No one wants to have it, but if one got it, he does not want to lose it. What is It?

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

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

You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

What is harder to catch the faster you run?

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

Find out which of the given views in the picture is accurately the top view of the given pyramid.

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100