Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

A.Edwin is taller than Jurgen
B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

A man dies of old age on his 25 birthday. How is this possible?

What English word has three consecutive double letters?

You can hear me, but you can't touch or see me.

What am I?

Count the squares in the matchstick puzzle below?

I’m tall when I’m young, and I’m short when I’m old. What am I?

What is at the end of a rainbow?

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?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?