In the following sentence, some part of the sentence may contain an error. Identify the part that has an error, or select "No error" if the sentence is grammatically correct. Sentence: I asked the shopkeeper, "Do you have change for a five hundred rupees note?"

Introduction / Context:
This is an error spotting question focusing on correct use of number expressions with countable nouns and currency in English. The sentence describes a common situation in which someone asks for small denominations in exchange for a larger denomination banknote. You must identify which part of the sentence contains an error or decide that there is no error at all.

Given Data / Assumptions:

• Part A: "I asked the shopkeeper"
• Part B: "\"Do you have change"
• Part C: "for a five hundred rupees note?\""
• Part D: "No error"
• The full sentence is: "I asked the shopkeeper, \"Do you have change for a five hundred rupees note?\""

Concept / Approach:
In English, when a numeral phrase is used directly before a singular countable noun such as "note" or "coin", the unit word (rupee, dollar, pound) normally appears in the singular form, even if the number is greater than one. For example, we say "a five hundred rupee note" or "a ten dollar note". The plural "rupees" would be used when the unit is not immediately followed by "note" or "coin", such as "five hundred rupees" in isolation. Hence the phrase "a five hundred rupees note" is grammatically incorrect, and it should be "a five hundred rupee note".

Step-by-Step Solution:
Step 1: Check part A, "I asked the shopkeeper". This is a correct simple past clause and contains no error.Step 2: Check part B, "\"Do you have change". This is correct as part of direct speech. The phrase "do you have change" is grammatically fine.Step 3: Check part C, "for a five hundred rupees note?\"". Here, the phrase "five hundred rupees note" looks suspicious because of the plural "rupees" immediately followed by the singular "note".Step 4: Apply the rule for currency units before "note": we should say "a five hundred rupee note", similar to "a hundred dollar bill" or "a fifty pound note". Therefore, part C contains the error.Step 5: Since we have identified a clear grammatical error in part C, the correct answer cannot be "No error" (part D).

Verification / Alternative check:
Rewrite the sentence correctly: "I asked the shopkeeper, \"Do you have change for a five hundred rupee note?\"" Now compare this with other standard expressions: "a ten rupee coin", "a hundred rupee note", "a five hundred rupee note". All of them use the unit "rupee" in the singular right before the noun "coin" or "note". Using "rupees" here would sound unnatural to native speakers and is marked incorrect in exams.

Why Other Options Are Wrong:
Part A is a simple, correct clause in the past tense. Part B is part of a correctly punctuated question in direct speech. There is nothing grammatically incorrect about either of them. Part D, "No error", is wrong because we have already identified the currency unit error in part C. Therefore, only part C can be chosen as the segment that needs correction.

Common Pitfalls:
Learners sometimes overgeneralise the rule that plural numbers require plural nouns and assume that "five hundred rupees note" must be correct because "five hundred rupees" is common. The key is to distinguish between "five hundred rupees" as an amount and "a five hundred rupee note" as a single object representing that amount. In the latter case, the currency unit functions as an adjective and stays in the singular form.

Final Answer:
The error is in part C, where "a five hundred rupees note" should be corrected to "a five hundred rupee note". Therefore, part C is the correct choice.