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Class 7 Exam  >  Class 7 Tests  >  Olympiad Test: Exponents and Powers - 1 - Class 7 MCQ

Olympiad Test: Exponents and Powers - 1 - Class 7 MCQ


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10 Questions MCQ Test - Olympiad Test: Exponents and Powers - 1

Olympiad Test: Exponents and Powers - 1 for Class 7 2024 is part of Class 7 preparation. The Olympiad Test: Exponents and Powers - 1 questions and answers have been prepared according to the Class 7 exam syllabus.The Olympiad Test: Exponents and Powers - 1 MCQs are made for Class 7 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Exponents and Powers - 1 below.
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Olympiad Test: Exponents and Powers - 1 - Question 1
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The value of (−1)250 is

Olympiad Test: Exponents and Powers - 1 - Question 2
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The value of (−1)75 is

Detailed Solution for Olympiad Test: Exponents and Powers - 1 - Question 2

(−1)75  as power is odd so -ve sign will remain
so -1 will be the answer 

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Olympiad Test: Exponents and Powers - 1 - Question 3
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The value of (−1)450 is

Detailed Solution for Olympiad Test: Exponents and Powers - 1 - Question 3

Explanation:

- To find the value of (-1)450, we need to consider the property of exponents.
- Any non-zero number raised to an even power will result in a positive number, and any non-zero number raised to an odd power will result in a negative number.
- Since -1 is being raised to the 450th power, which is an even number, the result will be positive.
- Therefore, the value of (-1)450 is 1.

Olympiad Test: Exponents and Powers - 1 - Question 4
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The value of (−1)91 is
Olympiad Test: Exponents and Powers - 1 - Question 5
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The value of (−1)310 is
Detailed Solution for Olympiad Test: Exponents and Powers - 1 - Question 5

Since the power is an even integer , the minus sign will get cancelled. So we will receive 1 only.

Olympiad Test: Exponents and Powers - 1 - Question 6
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The value of 28 is
Olympiad Test: Exponents and Powers - 1 - Question 7
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Simplify and write in exponential form of 22x 25
Olympiad Test: Exponents and Powers - 1 - Question 8
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Simplify and write in exponential form of (− 4)100× (−4)20
Detailed Solution for Olympiad Test: Exponents and Powers - 1 - Question 8

When bases are same, powers are added. So we will add powers 
(-4)100(-4)20=(-4)120

Olympiad Test: Exponents and Powers - 1 - Question 9
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Simplify and write in exponential form of 52× 57× 512
Olympiad Test: Exponents and Powers - 1 - Question 10
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The value of 22 is
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