Question

For any natural number n, 6ⁿ ends with the digit ______.

Options

• 0

• 6

• 3

• 2

Answer 1

For any natural number n, 6ⁿ ends with the digit 6.

Explanation:

6 is correct because the last digit of 6ⁿ  is always 6 for any natural number n. When you multiply any number ending in 6 by 6, the product will also end in 6.

For example:

n = 1 ⇒ 6¹ = 6

n = 2 ⇒ 6² = 36

n = 3 ⇒ 6³ = 216