Take away the whole and some still remain. What is it?

Which word does the below Plexor means ?

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?

The centre of the third figure is empty. What digit should fit inside?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

what does the below rebus mean?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. 123 people participate in the contest. When the boxes are opened, it turns out that 43 people have guessed none of the fruits correctly, 39 people have guessed one fruit correctly, and 31 people have guessed two fruits correctly.
How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?