What work can one never finish?

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

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

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

What jumps when it walks and sits when it stands?

Do you know who was buried in John's tomb?

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