If (a) leaves remainder 4 when divided by 9 and (b) leaves remainder 7 when divided by 9, what is the remainder when (2a+b) is divided by 9?
Answer and explanation
Correct answer: 6
Step 1: In (2a+b), the remainder part is (2\times4+7=15). Step 2: (15=9+6), so the remainder is 6. Step 3: In such questions, handle the remainder of each term separately.
Frequently asked questions
What is the correct answer to this question?
6
Why is this the correct answer?
Step 1: In (2a+b), the remainder part is (2\times4+7=15). Step 2: (15=9+6), so the remainder is 6. Step 3: In such questions, handle the remainder of each term separately.
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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