Question

The units digit in 126^126 – 4 is​

Answer 1

Step-by-step explanation:

Given :-

126^126 – 4

To find :-

Find the unit digit in the given number ?

Solution :-

Given number = 126^126 – 4

On taking 126^126

To know the unit digit of 126^126 First we have to know the unit digit of 6^126

We know that

6^1 = 6

Unit digit in 6^1 = 6

6^2 = 6×6 = 36

Unit digit in 6^2 = 6

6^3 = 6×6×6 = 216

Unit digit in 6^3 = 6

If we continue like this we get 6 as the unit digit for every positive number for n in 6^n

So

We get that

The unit digit in 6^126 = 6

So, The unit digit in 126^126 = 6

Now given that

126^126 - 4

The unit digit of 126^126-4

=> 6-4

=> 2

The unit digit = 2

Answer:-

The unit digit in the given number 126^126-4 is 2

Used formulae:-

• the unit digit for every positive number for n in 6^n is always 6

Answer 2

Answer:

Mark as brainlest please