Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

Can you replace the question mark with the correct number?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

What has lots of eyes, but can’t see?

What is the next number in this matchsticks series riddle?

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?