Question

the unit digit of the cube of the number 13 is​

Answer 1

Answer:

7

Step-by-step explanation:

because

one's digit of 13=3

and it's cube = 27 so 7 is the unit digit of cube if 13

Answer 2

Solution :-

we know that unit place of the cube of a number depends on the cube of unit digit of that number.

So,

→ 1³ = 1 => unit digit 1 .

→ 2³ = 8 => unit digit 8 .

→ 3³ = 27 => unit digit 7 .

→ 4³ = 64 => unit digit 4 .

→ 5³ = 125 => unit digit 5 .

→ 6³ = 216 => unit digit 6 .

→ 7³ = 343 => unit digit 3 .

→ 8³ = 512 => unit digit 2 .

→ 9³ = 729 => unit digit 9 .

→ 10³ = 1000 => unit digit 0 .

then,

→ 13³ = Unit digit

→ 3³ = Unit digit

→ 27 = Unit digit 7 (Ans.)

Verification :-

→ 13³ = 2197 = Unit digit 7 .

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