WHAT IS LONG HARD RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

Invitro fertilization. Two different eggs fertilized at different times and implanted into the mother's womb. Did you answer this riddle correctly?
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The boy chooses the paper and eats it without showing anyone the word on the paper and says, "I have made my decision. If the paper with tiger on it is left then I must have chosen the princess." They opened the remaining piece with the word tiger written on it. The boy got to marry his princess after all. Did you answer this riddle correctly?
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He called the princess and told her to walk to him and to touch his hand. Did you answer this riddle correctly?
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The days of the week. Monday, Tuesday, Wednesday, Thursday, Friday; the work days. Saturday; play. Sunday; pray Did you answer this riddle correctly?
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One president served non-consecutive terms (there was a president between his terms) so he held two different presidencies. The president who really did this was Grover Cleveland. Did you answer this riddle correctly?
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The wind. Did you answer this riddle correctly?
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The smoke Did you answer this riddle correctly?
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Honey combs. Did you answer this riddle correctly?
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Black ants. Did you answer this riddle correctly?
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An umbrella Did you answer this riddle correctly?
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Create a new deck of the exactly same number of cards as are face up cards in the original deck.Take 15 number of cards in a new deck and change their face direction. For example- You create a new deck of 15 cards and out of 15, 5 faces up in a new deck. So remaining 10 faces up are in the old deck. But hey! while creating the new deck you reversed the face direction of new cards. So actually the 5 cards which were facing up are actually face down in the new deck while 10 faces up. Did you answer this riddle correctly?
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P3 can only be certain of his cap if 1 & 2 are both white. Since he is not certain then 1 & 2 must be either white/red or red/red. 2 knows this but the only combination that he will be able to know the colour of his own cap is if he sees that 1 is wearing a white cap. 1 knows this but as 2 remains uncertain then 1 must be wearing a red cap. Did you answer this riddle correctly?
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Let us simplify boxes by naming them from 1 to 10.
Now the trick here is to pick different number of balls from different boxes. So to simplify things, we will pick balls corresponding to box number.

Thus, pick 1 ball from Box 1, 2 balls from box 2, 3 balls from box 3 and so on. You will have 55 balls altogether. Now, put them all in the balance.

If all balls were weighing accurate 10 grams, the total weight of the 55 balls would have been 550 grams. But one of the box must have had the defective balls.

Suppose if the defective balls were in box number 2, then the total weight will be 2 grams less than 550. If the defective balls were in box 8, the total weight will be less than 8 grams from 550. In this way, you will be able to identify which box has the defective balls. Did you answer this riddle correctly?
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25 miles.

The easiest way to think about this is to consider the time. The bikes will take 1 hour to touch, given that they start 20 miles apart and are each traveling toward each other at 10 mph.

Therefore the bee is buzzing back and forth at 25 mph for 1 hour. Did you answer this riddle correctly?
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Harvest.

Har is another name for Shiva.
A vest is something you wear.
And a harvest might use a scythe. Did you answer this riddle correctly?
YES  NO