If a number leaves remainder 8 when divided by 11, what remainder will twice the number leave when divided by 11?
Answer and explanation
Correct answer: 5
Step 1: Let the number be (11q+8). Step 2: Twice the number is (22q+16=11(2q+1)+5), so the remainder is 5. Step 3: The final remainder must always be less than 11.
Frequently asked questions
What is the correct answer to this question?
5
Why is this the correct answer?
Step 1: Let the number be (11q+8). Step 2: Twice the number is (22q+16=11(2q+1)+5), so the remainder is 5. Step 3: The final remainder must always be less than 11.
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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