How are the unit digits of the product of 20 trips multiplied?

Multiplication operations with ten digits or more do not affect the single-digit case, and only the single-digit rule can be considered.

3x3 = 9 9

3x3x3 = 27 7

3x3x3x3 = 81 1

3x3x3x3x3=243 3

3x3x3x3x3x3=729 9

Therefore, if we take 4 cycles (3,9,7,1), 20 3s are exactly the last digits of the 5th cycle, so the single digit is 1

It's equal to 3486784401, so the number is 1, which is 3 to the 20th power, and it's calculated by multiplication.

3x3 = 9 9

3x3x3 = 27 7

3x3x3x3 = 81 1

3x3x3x3x3=243 3

3x3x3x3x3x3=729 9

Therefore, if we take 4 cycles (3,9,7,1), 20 3s are exactly the last digits of the 5th cycle, so the single digit is 1

3x3 = 9 9

3x3x3 = 27 7

3x3x3x3 = 81 1

3x3x3x3x3=243 3

3x3x3x3x3x3=729 9

The following numbers are expressed in single digits only.

Because it is always circulating, dividing twenty by four equals 5 groups, and he is the last of the fifth group, so it is a bit 1

For example, if 3,5 units are multiplied as a group, and 3,100 units are multiplied, there are 20 groups.

3x3=99x3=27

27x3=81

81x3=243

The single digit is a loop from , and multiplying by 4 times is a loop, so 100 3 times in a row are looped 25 times, and the last single digit is 3.

This one has a regularity, and their cyclical law is 3, 9, 7, 1

The single digit of the product of 20 3 consecutive times is exactly 5 times, so it is 1

A single digit of 7 is 7

The single digit of the two sevens is 9

The single digit of 3 7's is 3

The single digit of 4 7's is 1

You'll find a Voyette number that is a circular of 7, 9, 3, 1.

So the single digit of the product of 30 missing 7 times is: 9

The unit digit of the product of the 28 3-continuous dust rolls is (1).

That is, the mantissa is 3 9 7 1 cycle.

28 4=7 So the mantissa is the same as the 4th limb, which is 1

7 = 7 (single digit is 7).

7 7 = 49, (the single digit is 9).

7 7 7 = 343, (single digit is 3).

7 7 7 7 = 2401, (the single digit is 1).

Every four cycles thereafter, 20 = 4 5

So the single digit of the product of 20 multiplies of 7 is 1

You didn't say how many times you multiplied, I'll give you an example of seven.

4 times 4 is 16, 16 times 4 is 64, and 64 times 4 is 256...Even 4 times is followed by 4, and odd 4 times is followed by 6Therefore, 12 4 times the unit is 4, and 2003 4 times the unit is 6

Summary. 10 32 multiplication) is only related to the single digit of 32. You can understand that (30+2)*(30+2)=900+120+4, which is only related to mantissa 2.

The unit digit of the product of 32 by 32 by 32 (10 32 consecutive multiplication) is several.

You're sleepy, dear! According to the question you described, Teacher Xiaoxi's answer is like envy: single-digit mindfulness is 4. The single digit of the product depends only on the single digit, which is equivalent to the single digit of 2 to the 10th power.

I still don't understand, can you talk more about it?

10 32 multiplication) of the product of the branch is simple and the number of fierce pants is only related to the single digit of 32. You can understand that (30+2)*(30+2)=900+120+4, which is only related to the mantissa 2.

The mantissa of 10 multiplied by 32 is the same as the mantissa of 10 multiplied by 2.

Then the mantissa of 2 multiplication also has a regularity, 4, 6, 2, 4, 6, 2 to the 10th is exactly 4.