How many times do a clock's hands overlap in a day ?

0 0 0 = 6
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

You can use any mathematical symbols in the space provided to make all above algebraic expressions true.

What number comes next in this sequence:
7 8 5 5 3 4 4 _

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

What jumps when it walks and sits when it stands?

what does the below rebus mean?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

Why is Saturday stronger than Monday?

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?