20) What is the last digit of 331, where n is a natural number?34n(a)

1.	20) What is the last digit of 331, where n is a natural number?34n(a) 2(b) 7(c) 8
Answer» (3³)⁴ⁿ = (27)⁴ⁿ = (27⁴)ⁿ = (531441)ⁿ since the last digit here 1 , so every time on putting any power on 1 , we will get 1 as the last digit. and since the question is ((3)³)⁴ⁿ +1 so, we have to add +1 to the last digit so, the last digit will become 1+1 = 2. option a

20) What is the last digit of 331, where n is a natural number?34n(a) 2(b) 7(c) 8

Answer»

(3³)⁴ⁿ = (27)⁴ⁿ = (27⁴)ⁿ = (531441)ⁿ

since the last digit here 1 , so every time on putting any power on 1 , we will get 1 as the last digit.

and since the question is ((3)³)⁴ⁿ +1 so, we have to add +1 to the last digit

so, the last digit will become 1+1 = 2.

option a