What brings you down but never up?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

A man desired to get into his work building, however he had forgotten his code.
However, he did recollect five pieces of information
* Fifth number + Third number = 14
* The fourth number is one more than the second number.
* The first number is one less than twice the second number.
* The second number and the third number equals 10.
* The sum of all five numbers is 30.

What is the code ?

What is the next number in this matchsticks series riddle?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

You need to arrange three 7 and mathematical symbols to form number 1?