Playing cards puzzles

Taking the vertical, horizontal and 2 diagonal lines through the centre of the square, the sum of the values at the ends of the lines equal 12 the value of the centre card.

The cards are arranged alternately in two sequences, one increases in steps of two, the other deceases by one. The suit follow the order Hearts, Diamonds, Spades Clubs.

Moving from left to right, card increase in value by 2,3. 4. 5 and 6, returning to Ace whenever the King is reached and always following the same suit pattern.

In each row, as you move to the right, the values increase by 2, 3 and 4 with each suit appearing once in each row

In each row the sum of the even cards, minus the sum of the odd cards, equals 10.

In each row the average of the 3 cards to the left equals the value of the card on the right. There is one card from each suit on every row.

In each row, add the values of the black cards to get a 2 digit number. Add these digits together to got tho value of the red card in the middle.

In each row the value of the right hand card equals the difference between the sums of the red cards and black cards to the left There is always 1 card ol each suit on every row.

In rows, add together the values of the first four cards b get a 2 digit number. Add these together to give the value of the right hand card. The suit of this card is the same as the card to the left with the highest value.

In rows, add the left and central card values to give the value of the right hand card value. The suit of the left card is the same as that of the right hand card.