Secret of the Amazing Numbers

It is time for me to share the secret of the Amazing Numbers. After your friend has selected the cards (that contain the selected Number), you add the first number of the selected cards to get a total (which is the selected Number).

For example, if your friends chose the cards with the starting numbers of 1, 8 and 16, the selected Number is 1+8+16 = 25. The Number 25 appears in these three cards and not in any of the other cards.

The starting numbers of the 7 cards are in multiples of 2, i.e. 1, 2, 4, 8, 16, 32, 64. Any Number can be formed by adding from these starting numbers. The Number 25, is formed by adding 16 + 8 + 1. Hence, this Number appears only in these three cards.

You can take my Amazing Numbers and make the 7 cards to amaze your friends!