What is both possible and impossible at the same time?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

A letter is hidden in the image in plain sight. Can you spot it in 6 seconds? Test your eye power now!

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Spot what is wrong here in below Picture?

In a university, a professor gave a set of three problems to the three brilliant students of his class. See the image for the questions.

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

Find the Goldfish below the given Image.

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

What four weights can be used to balance from 1 to 30 pounds?