CBSE Questions for Class 8 Maths Cubes And Cube Roots Quiz 8 - MCQExams.com

State whether the statements are true (T) or false (F):
The cube of $$0.4$$ is $$0.064$$.
  • True
  • False
State whether the statements are true (T) or false (F).
A number having $$7$$ at its units digit will have $$3$$ at the units place of its cube.
  • True
  • False
State whether the statements are true (T) or false (F).
Square of a number is positive, so the cube of that number will also be positive.
  • True
  • False
State whether the statements are true (T) or false (F).
$$363$$ $$\times$$ $$81$$ is a perfect cube.
  • True
  • False
State whether the statements are true (T) or false (F).
Each prime factor appears $$3$$ times in its cube.
  • True
  • False
State whether the statements are true (T) or false (F).
Cube roots of $$8$$ are $$+2$$ and $$-2$$.
  • True
  • False
State whether the statements are true (T) or false (F).
Cube of an odd number is even.
  • True
  • False
State whether the statements are true (T) or false (F).
$$999$$ is a perfect cube.
  • True
  • False
State whether the statements are true (T) or false (F).
Cube of an even number is even.
  • True
  • False
State whether the statements are true (T) or false (F).
$$\sqrt[3]{8 + 27} = \sqrt[3]{8} + \sqrt[3]{27}$$
  • True
  • False
State whether the statements are true (T) or false (F).
Cube of an odd number is odd.
  • True
  • False
Cube of $$(-\dfrac 12)$$ is:
  • $$\dfrac {1}{8}$$
  • $$\dfrac {1}{16}$$
  • $$-\dfrac {1}{8}$$
  • $$-\dfrac {1}{16}$$
What is the sum of six consecutive odd numbers to form $$216$$?
  • $$31 + 33 + 35 + 17 + 39 + 41$$
  • $$31 + 33 + 35 + 19 + 39 + 41$$
  • $$31 + 33 + 35 + 27 + 39 + 41$$
  • $$31 + 33 + 35 + 37 + 39 + 41$$
The cube of a number is 8 times the cube of another number. If the sum of the cubes of numbers is 243, then what is the difference of the numbers?
  • 3
  • 4
  • 6
  • -6
What is the sum of $$4$$ consecutive odd numbers to form $$64$$?
  • $$13 +15 + 27 + 19 = 64$$
  • $$13 +15 + 17 + 19 = 64$$
  • $$13 +5 + 17 + 19 = 64$$
  • $$3 +15 + 17 + 19 = 64$$
The product $$864 \times n$$ is a perfect cube. What is the smallest possible value of n ?
  • 2
  • 1
  • 4
  • 3
Let cos $$(\alpha +\beta)= \cfrac 4 5$$ and let sin $$(\alpha -\beta)= \cfrac 5 {13}$$, where $$0 \le \alpha, \beta \le \cfrac \pi 4$$, then tan $$2\alpha =$$ 
  • $$\cfrac {56}{33}$$
  • $$\cfrac {19}{12}$$
  • $$\cfrac {20}{7}$$
  • $$\cfrac {25}{16}$$
If a number x ends with a prime number, then $$\sqrt [ 3 ]{ x } $$ cannot end with the digit
  • 6
  • 3
  • 7
  • 8
If cube of a number is done what will be at unit palced 
  • $$5$$
  • $$7$$
  • From $$0$$ to $$9$$ any one
  • $$4$$
0:0:1


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