The one’s digit of the cube of 23 is
a. 6
b. 7
c. 3
d. 9

Solution:

Given, the number is 23.

We have to find the unit’s place on the cube of 23.

Number obtained when a number is multiplied by itself three times is called a cube number.

If m = n³, then m is a perfect cube where m and n are natural numbers.

Cube of 23 = 23 × 23 × 23

= 529 × 23

= 12167

Therefore, the unit’s digit is 7.

✦ Try This: The one’s digit of the cube of 42 is a. 4, b. 8, c. 3, d. 9

☛ Also Check: NCERT Solutions for Class 8 Maths

NCERT Exemplar Class 8 Maths Chapter 3 Problem 7

The one’s digit of the cube of 23 is, a. 6, b. 7, c. 3, d. 9

Summary:

The one’s digit of the cube of 23 is 7

☛ Related Questions:

• A square board has an area of 144 square units. How long is each side of the board? a. 11 units, b. . . . .
• Which letter best represents the location of 25 on a number line? a. A, b. B, c. C, d. D
• If one member of a pythagorean triplet is 2m, then the other two members are, a. m, m²+1, b. m²+1, m . . . .