Those two pair of scales are in balance. How many clubs are necessary to equilibrate the third pair of scales?
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Between the numbers columns from this diagram exists a certain relation. The characters you can find above the diagram are there in order to help you. What number needs to be put into the empty squares?
Start from any corner number and put another 4 numbers, following the leads. Make a sum of those five numbers. How many times can you obtain a sum equal to 27?
Start from the central circle and pass from one circle to another tangent circle. Find 4 numbers which sum is 86. After you find a trace come back into the central circle and start it again. If you can find a trace that satisfies the rules when you trace it clock wise and reverse, that means you found 2 traces. How many different traces are there?
Start from left-down corner and go to the top-right corner, following the arrows. Totalize all the numbers on the line. If every black circle represents minus 8 points, how many times can you obtain a result equal to 155?
Those two pair of scales are in balance. How many clubs are necessary to equilibrate the third pair of scales?
The sum of five numbers from each column, line and diagonal line needs to be 85. In order to do this, you must use four different numbers, as many times as necessary. Which are these numbers?
Between the number columns from this diagram exists a certain relation. The characters you can find above the diagram are there in order to help you. What number needs to be put into the empty squares?
Start from any corner number and put another 4 numbers, following the leads. Make a sum of those five numbers. Which sum is the biggest possible sum?
You have at your disposal 4 drops in order to obtain a score equal to 75. Using this target fin out how many possibilities are there in order to obtain this score. Start from the fact that each trial is successful and once you use 4 numbers you are not able to use them twice into the same combination, even if their order is different. How many combination are there?