Solution:

Samuel should have come at 8 pm but he came home at 8:05 a.m i.e the next day.

Solution:

Red or Tan

Explanation:
The numbers of letters in each color get reduced by one on every row.
Scarlet = 7
Orange and Yellow = 6
Green, Brown, and black = 5
Gray and Blue = 4
So the next color should be of three words like Red or Tan.

Solution:

The girl sitting on your lap.

Solution:

Wristwatches

Most of us must have assumed the answer to be a ring in the wrong finger but that's not the case as it's a normal ring. The error is in the watch. Wristwatches are manufactured with the adjustment pin always on the right side.

Solution:

Rick wasn't at home. He Parked his car after snow built up on the driveway.

Solution:

Person-1

Explanation:
Person-3: Some will say the answer to be person-3 as his body is floating in the water. But the question is do dead bodies float in water?. The answer is yes, but it takes at least 2 to 3 days for a dead body to float. In the starting 1 to 2 days, a dead body sink under the water, thereafter it starts floating. Thus, person-3 is not dead.

Person-2: There is vibration in the water. This makes us sure that person-2 is not dead.

Person-1: If you see closely, he is having a book in his hand and it is in the water. Also, he seems to be in a subconscious state.

So, the answer to this puzzle is Person-1.

Solution:

11

You already knew the answer wasn't 26 letters. That would be too easy.
The letters in the words "the alphabet are 11

Solution:

24 Years

If you were 8 years old 8 years ago, then your current age is 8 + 8 = 16 years old.
After 8 more years pass, your age will be 16 + 8 = 24 years old.

So, you will be 24 years old in 8 years from now.

Solution:

"Six" (6)

When you remove the first letter "S" from the word "Six," you are left with the letters "Ix."

"Ix" is the Roman numeral representation of the number 9.

Thus, the wordplay involves the transformation of "Six" (6) into "Ix," representing the number 9, which is an odd number in Roman numerals.

Solution:

10

38 Sheeps = 30 ate sheeps (30 ate sounds like 38)
There's 40 Lions in a field, 30 ate Sheeps

So if you do simple maths 40 - 30 = 10
the answer is 10