Advertisements
Advertisements
Question
Using prime factorisation, find which of the following are perfect cubes.
729
Advertisements
Solution
We have, 729 = 3 × 3 × 3 × 3 × 3 × 3
Since, the prime factors appear in triplets.
So, 729 is a perfect cube.
APPEARS IN
RELATED QUESTIONS
Find the cube root of the following number by the prime factorisation method.
15625
Using the method of successive subtraction examine whether or not the following numbers is perfect cube 130 .
\[\sqrt[3]{8 \times . . .} = 8\]
Evaluate:
Making use of the cube root table, find the cube root
250.
Making use of the cube root table, find the cube root
0.27
Find the cube root of 8000.
Using prime factorisation, find which of the following are perfect cubes.
128
Using prime factorisation, find which of the following are perfect cubes.
1331
By what smallest number should 3600 be multiplied so that the quotient is a perfect cube. Also find the cube root of the quotient.
