How to find out the value of cube root of 27
We will find factors of the number 27 then we will take cube root of the number, which is a value which when multiplied by itself three times gives the value, 27 So let’s start –
Step1: The given value 27.
Step 2: Now we will find the factors of 27.
27 is divisible completely by 1, 3,9 and 27.
So the Factors of 27 are 1,3,9 and 27
Step 3: if 3 is multiplied three times, the value is 27.
3*3*3 =27
Step 4: Hence 3 is considered to bethe cube root of 27
Step 5: Therefore, we can say that the value of cube root of 27 is 3
Step 6 : We express the value of cube root of 27 as ∛27 = 3
Since the cube root symbol is denoted by ∛
Multiple Choice Question –
No 1) What are the prime factors of 27
A) 3
b) 3 and 9
c) 1, 3, 6 and 9
d) 3 and 27
Answer — a) 3.
Because it has only two divisors or factors 1 and 3. It cannot be divided by any other number except 1 and itself.
Q.No.2) Why27 is not a Prime number?
a) Because it has more than two factors other than 1 and itself
b) Because it is divisible by 3 and 9 c completely
c) Since It has more than two factors
d) All of the above
Answer — D). All of the above.
Because 27 has more than two factors. A number is said to be Prime when it is divided by the number 1 and itself. Other than two factors, 1 and itself it has more factors i.e., 3 and 9. Hence 27 is not a prime number