What work can one never finish?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

0 0 0 = 6
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

You can use any mathematical symbols in the space provided to make all above algebraic expressions true.

What came first, the chicken or the egg?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

Be active and find the killer in the picture Riddle below.

Count the number of triangles in the picture below:

What can you hold in your right hand, but never in your left hand?

The Judge knows that Alamgir was killed by his girlfriend Jasline, but the judge is unsure whether to punish her. Why?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?