Class 7 Exam > Class 7 Questions > Multiplicative inverse of 21 isa)21b)7c)1/21d...
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Multiplicative inverse of 21 is
- a)21
- b)7
- c)1/21
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Multiplicative inverse of 21 isa)21b)7c)1/21d)None of theseCorrect ans...
Multiplicative inverse means is a number which when multiplied by x yields the multiplicative identity, 1. A number multiplied by 21 wich give 1 is the reciprocal of 21 which is 1/21
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Most Upvoted Answer
Multiplicative inverse of 21 isa)21b)7c)1/21d)None of theseCorrect ans...
Answer:
The multiplicative inverse of a number 'a' is a number 'b' such that their product is equal to 1. In other words, if 'a' is multiplied by its multiplicative inverse 'b', the result will always be 1.
To find the multiplicative inverse of 21, we need to find a number 'b' such that 21 * b = 1.
Let's check the given options:
- a) 21: If we multiply 21 by 21, the result is 441. It is not equal to 1, so 21 is not the multiplicative inverse of 21.
- b) 7: If we multiply 21 by 7, the result is 147. It is not equal to 1, so 7 is not the multiplicative inverse of 21.
- c) 1/21: If we multiply 21 by 1/21, the result is 1. Therefore, 1/21 is the multiplicative inverse of 21.
- d) None of these: This option is incorrect because we have already found the multiplicative inverse of 21, which is 1/21.
Therefore, the correct answer is option 'c' (1/21).
Community Answer
Multiplicative inverse of 21 isa)21b)7c)1/21d)None of theseCorrect ans...
The multiplicative identity is one, so what can you multiply 21 to get one. therefore 1/21 is the multiplicative inverse of 21
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Multiplicative inverse of 21 isa)21b)7c)1/21d)None of theseCorrect answer is option 'C'. Can you explain this answer?
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Multiplicative inverse of 21 isa)21b)7c)1/21d)None of theseCorrect answer is option 'C'. Can you explain this answer? for Class 7 2025 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Multiplicative inverse of 21 isa)21b)7c)1/21d)None of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Multiplicative inverse of 21 isa)21b)7c)1/21d)None of theseCorrect answer is option 'C'. Can you explain this answer?.
Multiplicative inverse of 21 isa)21b)7c)1/21d)None of theseCorrect answer is option 'C'. Can you explain this answer? for Class 7 2025 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Multiplicative inverse of 21 isa)21b)7c)1/21d)None of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Multiplicative inverse of 21 isa)21b)7c)1/21d)None of theseCorrect answer is option 'C'. Can you explain this answer?.
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