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MATHS Assertion (A) & Reason (B) MCQ

Cube and Cube Roots · Rajasthan Board (RBSE) STD 8 (Rajasthan - English Medium). 60 questions.

Questions · Page 2 of 2

Assertion (A) & Reason (B) MCQ

MCQ 511 Mark
Assertion (A): The number of zeroes at the end of the cube of the number 100 is 4.
Reasons (R): A cube number is a number multiplied by itself 3 times.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • ✓
    A is false but R is true.
Answer
Correct option: D.
A is false but R is true.
D
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MCQ 521 Mark
Assertion (A): The cube of an odd natural number is odd.
Reasons (R): A cube number is a number multiplied by itself 3 times.
  • A
    Both A and R are true and R is the correct explanation of A.
  • ✓
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A.
B
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MCQ 531 Mark
Assertion (A): The cube of an even natural number is even.
Reasons (R): A cube number is a number multiplied by itself 3 times.
  • A
    Both A and R are true and R is the correct explanation of A.
  • ✓
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A.
B
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MCQ 541 Mark
Assertion (A): The one’s digit in the cube root of the cube number 1331 is 1.
Reasons (R): The cube root of a number is the factor that we multiply by itself three times to get that number.
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A.
A
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MCQ 551 Mark
Assertion (A): 99 is not a perfect cube.
Reasons (R): The perfect cube is the result of multiplying the same integer three times.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • ✓
    A is false but R is true.
Answer
Correct option: D.
A is false but R is true.
D
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MCQ 561 Mark
Assertion (A): 400 is a perfect cube.
Reasons (R): The perfect cube is the result of multiplying the same integer three times.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • ✓
    A is false but R is true.
Answer
Correct option: D.
A is false but R is true.
D
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MCQ 571 Mark
Assertion (A): 27 is a cube number.
Reasons (R): A cube number is a number multiplied by itself 3 times.
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A.
A
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MCQ 581 Mark
Assertion (A): 125 is a perfect cube.
Reasons (R): The perfect cube is the result of multiplying the same integer three times.
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A.
A
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MCQ 591 Mark
Assertion (A): 1000 is a perfect cube.
Reasons (R): The perfect cube is the result of multiplying the same integer three times.
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A.
A
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MCQ 601 Mark
Assertion (A): 10000 is not a cube number.
Reasons (R): A cube number is a number multiplied by itself 3 times.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • ✓
    A is false but R is true.
Answer
Correct option: D.
A is false but R is true.
D
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