This set of Mathematics Multiple Choice Questions & Answers (MCQs) focuses on “Powers with Negative Exponents”.
1. What is the multiplicative inverse of 10-3?
a) 100
b) -100
c) \(\frac{1}{1000}\)
d) 1000
View Answer
Answer: d
Explanation: Multiplicative inverse of an = \(\frac{1}{a^n}\)
⇒ Multiplicative inverse of 10-3 = 103 = 1000.
Explanation: Multiplicative inverse of an = \(\frac{1}{a^n}\)
⇒ Multiplicative inverse of 10-3 = 103 = 1000.
2. What is the value of 10-6?
a) -0.000010
b) -0.0000010
c) 0.000010
d) 0.0000010
View Answer
Answer: c
Explanation: a-m = \(\frac{1}{a^m}\)
⇒ 10-6 = 0.000010.
Explanation: a-m = \(\frac{1}{a^m}\)
⇒ 10-6 = 0.000010.
3. Find the value of 3-2.
a) \(\frac{1}{9}\)
b) –\(\frac{1}{9}\)
c) 8
d) \(\frac{1}{8}\)
View Answer
Answer: a
Explanation: a-m = \(\frac{1}{a^m}\)
⇒ 3-2 = \(\frac{1}{3^2} = \frac{1}{9}\).
Explanation: a-m = \(\frac{1}{a^m}\)
⇒ 3-2 = \(\frac{1}{3^2} = \frac{1}{9}\).
Sanfoundry Certification Contest of the Month is Live. 100+ Subjects. Participate Now!
advertisement
advertisement
4. Find the unknown value: \(\frac{1}{729}\) = 9.
a) -4
b) -3
c) 3
d) 4
View Answer
Answer: b
Explanation: a-m = \(\frac{1}{a^m}\)
⇒ 9-3 = \(\frac{1}{9^3} = \frac{1}{729}\).
Explanation: a-m = \(\frac{1}{a^m}\)
⇒ 9-3 = \(\frac{1}{9^3} = \frac{1}{729}\).
Sanfoundry Global Education & Learning Series – Mathematics – Class 8.
Check this: Class 10 Mathematics MCQs | Class 8 - Mathematics Books
To practice all areas of Mathematics, here is complete set of 1000+ Multiple Choice Questions and Answers.
Related Posts:
- Practice Class 10 Mathematics MCQs
- Buy Class 8 - Mathematics Books
- Practice Class 9 Mathematics MCQs
