What has hands, but can’t clap?

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?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

Can you decipher the two rows to find the hidden word?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

What does this rebus mean?

O
N
C
E
TIME

What Time Should the last watch show in the below figure?

Which English verb becomes past tense just by rearranging the letters?

Below, you can see three complete equations and one incomplete. Based on the three complete ones, can you complete the incomplete one?

5 $ 4 $ 3 $ 9 = 4215
6 $ 9 $ 2 $ 6 = 3816
4 $ 7 $ 3 $ 3 = 1122
7 $ 2 $ 7 $ 4 = ____

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?