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What is the value of (2^7-2^5)?
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Answer and explanation
Correct answer: 96
First evaluate the powers: 2^7 = 128 and 2^5 = 32. Therefore, 2^7 - 2^5 = 128 - 32 = 96, so option A is correct. In an exam, calculating both powers before subtracting helps avoid errors; 64 would not be the result of this subtraction.
Frequently asked questions
What is the correct answer to this question?
96
Why is this the correct answer?
First evaluate the powers: 2^7 = 128 and 2^5 = 32. Therefore, 2^7 - 2^5 = 128 - 32 = 96, so option A is correct. In an exam, calculating both powers before subtracting helps avoid errors; 64 would not be the result of this subtraction.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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