What is harder to catch the faster you run?

What does below rebus means ?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

The answer I give is yes, but what I mean is no. What was the question?

10+10 and 11+11 can give you the same answer.

Explain how?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

Next Number in the Series,

5, 16, 49, 104, ?