Add a number to the question mark, what number should be filled in the question mark?

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1.64 (the last 3 digits are the square of the first 3 digits).

2.481 (the middle number is the sum of the squares of the numbers on both sides).

3.518 (the middle number is 2 times the difference between the two numbers, the original question is written incorrectly) 43 (the number on the right is half the difference between the two numbers on the left).

5.7 (the number on the right is the average of the two numbers on the left).

6.4 (unexplained, estimated original question writing error).

7.3 (no explanation).

8.2 (the number on the right is twice the difference between the two numbers on the left).

1.64 (the last 3 digits are the square of the first 3 digits).

2.481 (the middle number is the sum of the squares of the numbers on both sides).

3.518 (the middle number is 2 times the difference between the two numbers, the original question is written incorrectly) 43 (the number on the right is half the difference between the two numbers on the left).

5.7 (the number on the right is the average of the two numbers on the left).

6.4 (unexplained, estimated original question writing error).

7.3 (no explanation).

8.2 (the number on the right is twice the difference between the two numbers on the left).

You're so good, you can find it!

Hello, the question mark should be filled with the number 1. Each of the top numbers is divided by the corresponding number in the bottom row to get the time quotient plus the dividend.

It is exactly equal to the corresponding number in the middle row. For example: 6 2=3+6=9.

It should be filled in 2, and the difference between the two numbers on the opposite side of each circle and the other two numbers.

The three circles are 1, 0, and 3, so the difference in the order is 2

Fill in the question mark 2 just as before.

Hello, it should be filled in 5, the numbers in each row appear in pairs, and the last line is missing a 5.

The second line should be 61568 instead of 01568).

74 should be filledThe rule of this problem is that each number is changed by multiplying the two numbers under his feet and subtracting 10 to get the middle annihilation, e.g. 14 = 8x3-10; 6=2x8-10...

So how much do you say 6x14-10 is?!

Get the result, and then substitute the top number to check the sale and see?

The answer is 46 calculated in the chart below.

One of the zombies and a ghost can correspond to 0 and 7, 4 and 6, etc., which can add up to two numbers equal to 10. So it's not limited to the number 5 marked in the diagram!

The answer is 18 three numbers added to one of them, and the position of the largest number varies.

The answer is 18, and the rule is that each red number is the sum of the largest number in the blue box minus the other two numbers.

So 40-13-9=18

The question mark should be filled with 200, and the first one is half of the word "hundred", which should be 50x4=200 according to the above rules

The second is half of the word "ten".

ps: It's the first one that I can't see what the word is. Is it "again"?

Fill in 4. This is the most illustrative approach. The most beautiful!

Because: 1, after filling 4, the sum of the four digits of the rectangle is equal to the sum of the four digits of the diamond. In other words, the sum of the four corners of two (i.e., two) geometries is equal.

2, except for the middle two words, the sum of all numbers divided by the sum of diamond numbers is equal to 2. (To be exact) the middle number 2.

31 should be filled, and the law can be seen from the first and last rows, the number of tens is the same as the ten digits of the previous number, and the single digit is the same as the number of each of the following numbers, so the question mark should be filled in 31

Fill in Form 4. It's the best way to talk. The prettiest!

Because: 1, after filling 4, the sum of the four digits of the rectangle is equal to the sum of the four digits of the diamond. In other words, the sum of the four angles of two geometric figures is equal.

2.The sum of all the numbers except the middle two words divided by the sum of the diamond numbers is equal to 2, i.e. the middle number 2.

The middle ten digits are the same as the left tens, and the single digits are the same as the right single digits, so? =31.

Fill in 31 for the benefit, 31 for the question mark, and 31 for the question mark. The first two vertical rows, the ten digits of each horizontal row are the same, so fill in 3 digits for the ten digits to see the vertical row, and the single digits of the last two rows of the horizontal row are the same, so fill in 1

Fill in four. This is the most eloquent way to put it mildly. The most beautiful!

Because: 1, after filling 4, the sum of the four digits in the rectangle is equal to the sum of the four digits in the diamond. In other words, the sum of the four corners of two (i.e., two) geometries is equal.

2, except for the middle two words, the sum of all numbers divided by the sum of diamond numbers is equal to 2. (To be exact) the middle number 2.

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<> as long as you can find a rule, fill in the number according to the rule you find, there is no unique answer.