What work can one never finish?

In a guessing game, five friends had to guess the exact numbers of apples in a covered basket.
Friends guessed 22, 24, 29, 33, and 38, but none of the guesses was correct. The guesses were off by 1, 8, 6, 3, and 8 (in random order).

Can you determine the number of apples in a basket from this information?

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.

Can you count the number of lines in the below picture?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?