Find the answer to this logical problem 8) The issue of money Now, on the table in front of you, there are 100 coins that face the sky is "Gong", and other coins that don't know the quantity and face the sky is "Hua". Then your eyes are covered. (you can't remember the location of all the coins.) now you try to divide these coins into two parts, So that each coin has the same number of "male" coins (the number of "flower" coins does not need to be the same). How do you do it? Of course, suppose you can't feel with your hand whether the coin is "Gong" or "Hua", and no one will prompt you 9) In a 52 card playing card, shuffle the cards first, and then arrange them from left to right (all open). Now you and your friends take turns to take cards, one at a time, and each card can only be taken from the leftmost or rightmost end. After taking the cards, you and your friends add up the number of cards you get (J, Q, K represent 11, 12, 13), whose number is the biggest, Who is the winner. If the number is the same, it is equal. If you are the first, how do you plan an invincible strategy?

Find the answer to this logical problem 8) The issue of money Now, on the table in front of you, there are 100 coins that face the sky is "Gong", and other coins that don't know the quantity and face the sky is "Hua". Then your eyes are covered. (you can't remember the location of all the coins.) now you try to divide these coins into two parts, So that each coin has the same number of "male" coins (the number of "flower" coins does not need to be the same). How do you do it? Of course, suppose you can't feel with your hand whether the coin is "Gong" or "Hua", and no one will prompt you 9) In a 52 card playing card, shuffle the cards first, and then arrange them from left to right (all open). Now you and your friends take turns to take cards, one at a time, and each card can only be taken from the leftmost or rightmost end. After taking the cards, you and your friends add up the number of cards you get (J, Q, K represent 11, 12, 13), whose number is the biggest, Who is the winner. If the number is the same, it is equal. If you are the first, how do you plan an invincible strategy?

Divide these silver coins into two piles, one pile of 100 pieces (named pile a), and the others in another pile (named pile b)
Let x coins in pile a face upward, then pile B is (100-x),
At this time, we will turn over all the coins in pile a once. It turns out that all the coins with the flower side up have the male side up, that is to say, there are (100-x) coins with the male side up