If a number leaves remainder 4 when divided by 9, what is the remainder when its cube is divided by 9?
Answer and explanation
Correct answer: 1
Step 1: For the cube, consider (4^3=64). Step 2: (64=9\times7+1), so the remainder is 1. Step 3: In powers, working with the small remainder avoids large calculations.
Frequently asked questions
What is the correct answer to this question?
1
Why is this the correct answer?
Step 1: For the cube, consider (4^3=64). Step 2: (64=9\times7+1), so the remainder is 1. Step 3: In powers, working with the small remainder avoids large calculations.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: Euclid’s Division Lemma.
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