This weekend’s brain teaser is from Art Cashin at UBS. Without looking it up, what is the answer.
A talkative woman hailed a cab in New York. She kept talking to the driver and asking him questions. He never responded. When she tapped him on the shoulder he said “I’m sorry lady. I’m deaf as a post. I can’t hear anything you’re saying.” When they arrived at her stop, she failed to tip him because he was lying. Explain!
Well, my knee jerk reaction is to say he was deaf so he couldn’t have known she was talking the whole time in the first place. But then you could argue he could have glimpsed her talking in the mirror but didn’t have time to be reading her lips.
I just googled the answer and I disagree with it, the driver could have easily known the destination by reading lips before the passenger got in.
Spoiler! 
Was gonna say destination too since that wasn’t mentioned and how else would he have known where to go?
Pretty weak sauce, Chad, you’re better than this 
I knew the answer in about 3 seconds… Way too easy chad… Haha
You guys are too quick for me. Here is another one from Art Cashin:
In a small town, an elder gent goes to the bank to cash a refund check. He chats so much with the teller that neither one notices that she swaps the dollars for the cents (e.g. $5.10 becomes $10.05). He pockets the money and on the walk home gives 5¢ to a neighbor’s kid. Once home he realizes that after deducting the 5¢ he now has exactly twice the amount of the original check. What was the amount on the original check?
The original cheque amount is $31.63
Let x be dollar amount of original cheque; let y be cent amount of original cheque
2(100x + y) = 100y + x - 5
Solve for integer solution with restraints that 0 < x and y < 100
There’s probably an easier way around it though…
I got the answer but didn’t want to spoil. Used excel.
Yeah just try Goalseek in Excel. That’s what i did.
Well, clearly it’s not that difficult if you have a spreadsheet. I think the better question is whether there is an analytical solution.
Yeah I used excel too haha
So I just told the deaf driver riddle to the gf, and her response was “that’s easy. He was lying because when he was tapped on the shoulder, he turned around.”
I was stunned. I started to explain that deaf doesnt mean you lose the sense of touch… But instead, i just said, “good job”
Female logic… Its a puzzler…
lol!
iteracom, that’s funny!!!
She touched a NYC taxi driver? Ewwww.
I don’t get the issue. Couldn’t she have written down the address and given it to him?
How did the driver know she was talking? She tapped him on the shoulder and his immediate response was that he couldn’t hear what she was saying. That makes me think he knew she had been talking.
That’s what I thought, but then I figured in real life he may have seen her lips moving in the mirror or simply known when she tapped his should while driving that she wanted to say something and preemptively answered that he couldn’t hear (and couldn’t take eyes off road to read lips). I don’t buy the initial explanation because he could have read her lips as she got in.