Question 32
MediumOriginal questionCustomer: Good morning. I bought this phone charger here on Saturday. It doesn't work.
Shopkeeper: Doesn't work? It's a good brand. Did you plug it in properly?
Customer: I plugged it in at home, at my office and at my sister's house. Three different . The phone shows nothing.
Shopkeeper: Maybe the problem is your phone.
Customer: I thought of that. So I tried my phone with my sister's charger. It charged in an hour. Then I tried her phone with this charger. Nothing.
Shopkeeper: (looking at the charger) Hmm. Do you have the ?
Customer: Here. Saturday, the fourteenth. Four hundred and fifty rupees.
Shopkeeper: The box?
Customer: Here. I kept it, just in case.
Shopkeeper: (smiling) You came . All right. I'll test it myself. (He plugs it in.) You're right, it's dead. I can give you a new one of the same kind, or you can choose another and pay the .
Customer: The same kind is fine. But could you test the new one before I go?
Shopkeeper: Of course. After what you've told me, I'd test it twice.
How does the customer prove that the fault is in the charger, not her phone?
Show the answer and explanation
Correct answer: A
Explanation
Swapping chargers and phones showed that only this charger fails, whichever phone it is used with.
Worth noting
Trying three sockets also rules out the sockets as the problem.
- Concept
- Following a line of reasoning
- Typical timeTypical
- 45 s
- Your timeYours
- —
Ten questions from Poems and conversations, at your own pace.