Solution:

The sun is a star.

Explanation:
Let us find out how we got there.

- Substitute a word with its antonym.
The pound is not a start.

- Eliminate one letter from one word.
The pound is not a star.

- Remove one word.
The pound is a star.

- Take out a letter and insert another in its place.
The sound is a star.

- Take out two letters from one word.
The sun is a star.

Solution:

The prisoner said, "I am telling lies".
This will create confusion to the warden as it's a paradox and can't be a lie or truth.

Solution:

Wednesday.

Explanation:
No one lies on Sunday, so Hazard is lying. Which means today is not Sunday. Also now we know that Hazard lies today, so "Hazard: I lie on Saturdays" is also a lie. Therefore, today is not sturdy and can one of Monday, Tuesday, or Wednesday. Now we know Oscar is telling the truth, therefore for the statement "Oscar: I will lie tomorrow." true today has to be Wednesday.

Solution:

Option A) :Yes

Explanation:
If Rachel is married, Joey who is unmarried is looking ar Rachel who is married.
If Rachel is unmarried, then Ross who is married is looking at Rachel who is unmarried.

Solution:

False.

Some flowers are used to make perfumes but lily are not the only type of flowers and so it is not necessarily true that lily makes perfumes.

Solution:

In the given statement, the letters represent their equivalent position in the alphabets.
A + A = 1 + 1 = 2 = B
B + B = 2 + 2 = 4 = D
A + D = 1 + 4 = 5 = E

Hence,
B + D + E = 2 + 4 + 5 = 11 = K

Solution:

He asks, "if the mystical stone is not in the East, I s it in the West?"
Possible reply by Mola Ram
1. Yes: mystical stone is in the west.
2. No: mystical stone is east.
3. I don't know: mystical stone is North.

Solution:

McLaughlin

Solution:

If two widows, each having a son married the son of the other widow, and then by the consummation of marriage, both the couples had a daughter, all the aforementioned relationships will turn to be true.

Solution:

This statement is true but only in a specific case i.e. if both of the siblings continue to live till the day the younger is as old as the elder one was during the time of their birth.