What is at the end of a rainbow?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

One evening there was a murder in the home of a married couple, their son and daughter. One of these four people murdered one of the others. One of the members of the family witnessed the crime.

The other one helped the murderer.

These are the things we know for sure:

1. The witness and the one who helped the murderer were not of the same sex.

2. The oldest person and the witness were not of the same sex.

3. The youngest person and the victim were not of the same sex.

4. The one who helped the murderer was older than the victim.

5. The father was the oldest member of the family.

6. The murderer was not the youngest member of the family.

Who was the murderer?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

Spot 5 differences in two Christmas tree below:

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98