Can you name an animal whose killing cannot be performed without spilling your own blood?

Complete the table series riddle by finding the number that can replace "??".

Two friends were stuck in a cottage. They had nothing to do and thus they started playing cards. Suddenly the power went off and Friend 1 inverted the position of 15 cards in the normal deck of 52 cards and shuffled it. Now he asked Friend 2 to divide the cards into two piles (need not be equal) with equal number of cards facing up. The room was quite dark and Friend 2 could not see the cards. He thinks for a while and then divides the cards in two piles.

On checking, the count of cards facing up is same in both the piles. How could Friend 2 have done it ?

Can you name some countries which do not have the alphabet 'A' in them?

John was piloting a plane behind a car but was never able to overtake it. Why?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

What does a man do only once in his lifetime, but women do once a year after they are 29?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

What jumps when it walks and sits when it stands?