Contents

- 1 What is the unit digit of 3?
- 2 What is the unit digit of 55555?
- 3 What is the unit digit of 6 15?
- 4 What is the unit digit of 13 ²¹?
- 5 What is the units digit of 7 20?
- 6 What is the unit digit of 7 139?
- 7 What will be the unit digit of the square of 79?
- 8 What will be the unit digit of the square of 71?
- 9 What is unit digit of the squares?
- 10 What will be the unit digit of 27?
- 11 What is the unit digit of 4 200?
- 12 How do you find the unit digit of a square root?
- 13 What is the unit digit of 13 2003?
- 14 How do you find the unit digit in math?
- 15 How do you find the unit digit of a factorial power?

## What is the unit digit of 3?

table 7 has the pattern of 7,,9, 3,1 and table 4 has the pattern of 4,6,4,6 etc. and the harder question of: what is the units digit of the following sum: 13^{841} + 17^{508} + 24^{617} =???????

power of 3 | calculation | unit digit |
---|---|---|

3 ^{2} |
3×3=9 | 9 |

3^{3} |
9×3=27 | 7 |

3 ^{4} |
7×3=21 | 1 |

3 ^{5} |
1×3= 3 | 3 |

## What is the unit digit of 55555?

Hence, the unit’s digit of square of 12796 is 6. (x) The number 55555 contains its unit’s place digit 5. So, the square of 5 is 25. Hence, the unit’s digit of square of 55555 is 5.

## What is the unit digit of 6 15?

The units digit of 6 raised to an integer exponent follows a definitive pattern. Consequently, with minimal calculations, you know that the units digit of 6^{15} is 6.

## What is the unit digit of 13 ²¹?

… etc. The units digit of 13 ^35 is 7, which means D is the answer to the original question.

## What is the units digit of 7 20?

The pattern is 7– 9–3–1. In this pattern, all positive exponents that are multiples of 4 will produce a 1 as its units digit. Thus: 7^20 has a units digit of 1.

## What is the unit digit of 7 139?

What is the unit digit of 7139? a)9b)7c)6d)3Correct answer is option ‘D’.

## What will be the unit digit of the square of 79?

9. 1. 6.

## What will be the unit digit of the square of 71?

as the square of 71 is. hence is the unit digit.

## What is unit digit of the squares?

The unit digit of a perfect square can be only 0, 1, 4, 5, 6 or 9. The square of a number having: 1 or 9 at the units place ends in1. 2 or 8 at the units place ends in 4. 3 or 7 at the units place ends in 9.

## What will be the unit digit of 27?

The units digit of base 27 is 7, i.e l = 7.

## What is the unit digit of 4 200?

We can now be sure that the unit digit is 6. If that’s a bit too much, you can just think of it like 4 ^ 200 = 16^100. But multiplying 16 to itself, since the ones digit is always from 6×6 = 36, the unit digit is 6.

## How do you find the unit digit of a square root?

Finding the square root of a four digit number is very simple if we go through the below mentioned steps. First step-: We have to group the last pair of digits, and the rest of the digits together. Now, check the unit digit of 4489 which is 9. So we can say that unit digit of its square root will be either 3 or 9.

## What is the unit digit of 13 2003?

The units digit of 13^2003 is the same as the units digit of 3^2003. Recall that the units digit pattern of powers of 3 is 3-9-7-1. Thus, when the exponent is a multiple of 4, the units digit is 1. Therefore, the units digit of 3^2004 is 1 and going backward one step in the pattern, the units digit of 3^2003 is 7.

## How do you find the unit digit in math?

Thus, the last digit of 7^{295} is equal to the last digit of 7^{3} i.e. 3. Let’s divide 158 by 4, the remainder is 2. Hence the last digit will be 9. Therefore, unit’s digit of (7^{925} X 3^{158}) is unit’s digit of product of digit at unit’s place of 7^{925} and 3^{158} = 3 * 9 = 27.

## How do you find the unit digit of a factorial power?

If the power cycle of number has 4 different digits, divide the power by 4, find the remaining power and calculate the unit’s digit using that. Similarly, if the power cycle of number has 2 different digits, divide the power by 2, find the remaining power and calculate the unit’s digit using that.