23 June 2017

A logic puzzle after a long time…

Found an interesting one from my friend Prodipta Chatterjee. Took me a few minutes till I realized that the trick is to not think of it as other problems of similar descriptions… Try it…

From a bag that has 26 bills (of three denominations – $1, $2 and $5), you pick out 20 of them blindfolded. You are guaranteed (probability = 1) that you will have at least one $1 bill AND two $2 bills and five $5 bills.

You have to solve for the following question: How much total money is there in the bag?

26 February 2017

Some crazy toy trivia

Can you guess the following? You can Google for the answers – you do not need to post them… But first try to guess

1. What is the oldest toy? If you think hard, you might be able to guess this.

2. What is the second oldest toy? For the life of me, I would not have guessed this right.

3. In England, it is against the law to not provide whom or what with toys? You are going to laugh your head off once you find the answer.

4. Speaking of which, in France it is a crime to sell dolls without this. Can you guess?

5. Which toy originated in gym classes in Australia, was banned in Indonesia, also banned by Japan from playing in public and the Russians deemed it to be “symbol of emptiness of American culture”?

6. Finally, can you guess who is the largest distributor of toys? You can get this if you think about it for a second.

Now check the internet for the answers…

Category: Puzzles | LEAVE A COMMENT
27 January 2017

This will surely surprise you!

While studying up about gin, I started researching the consumption patterns in the world. The first thing I wanted to know is which is the country that consumes the most gin in a year per capita (per person). The research led me to a country that I would not have guessed even if my life depended on it. That made me curious about other alcohols and then subsequently, non-alcoholic drinks. The answers will blow your mind. Try this for yourself. (The year signifies which year research data I could get to in the internet).

First, without Googling, take a shot. And then see how close were you. For the answers, just click the following link that will take you to the answers. http://www.rajibroy.com/?p=12555. Also, if you find statistics from later years, please send them my way…

Which country drinks annually, on a per person basis, the following:

a. Gin (2012)
b. Beer (2014)
c. Rum (2012)
d. Whiskey (2012)
e. Vodka (2012)
f. Wine (2015)
g. Tequila (2012)
h. Milk (2014)
i. Tea (2014)
j. Coffee (2014)

27 January 2017

Answers to the previous quiz

a. Gin : Phillipines!!! (Say what???)
b. Beer : Czech Republic
c. Rum : India!!!!!!
d. Whiskey: France (what?????)
e. Vodka: Russia (ok, this I get)
f. Wine: Vatican City (this also, I can understand)
g. Tequila: US (not Mexico!!!)
h. Milk: Finland
i. Tea: Turkey (very surprised it is not China)
j. Coffee: Netherlands

Category: Puzzles | LEAVE A COMMENT
18 August 2016

Puzzles!!! After a long time!! 2 for 1!!!

Headed to DC on a Thursday. Which always reminds me of those puzzles I used to post every Thursday on my way out of DC. Posting puzzles after a long time. And since one good turn deserves another, I will post two…

First a warmup one…

1. Assuming you are as old as me (which is about 50), what is the probability that you have seen in your life somebody (human being) with more than average number of legs?

a) Certainly
b) Very likely
c) As likely as not (50-50)
d) Unlikely
e) Impossible

Now for an interesting one…

2. In my running trail, there is a spot where I have to climb up ten stairs. At any step, I can jump up one stair or two stairs. How many different ways can I climb up those ten stairs?

If you are reading this on Facebook, just send me personal message with your answer – I will let you know if you got it and post your name as somebody who got it right. There might be some time gap – I have a long night in front of me today.

31 March 2016

A puzzle… after a long time…

Getting bored in the loooooong flight back. Suddenly remembered an email exchange I had with my friend Mita this week. It was actually a puzzle. In all honesty, I had heard a puzzle somewhat like that, so I was able to get it. Figured I will post it here.

The challenging part of the puzzle is its incredible simplicity. There are no catches in the puzzle. But the simplicity is bound to confuse readers. So here it goes…

“John called Mary. Mary called Tom. John is married but Tom is not”.

From the above, can you say whether the following statement

“A married person called an unmarried person” is

(a) Definitely True
(b) Definitely False
(c) Insufficient information to say whether True or False.

Send me personal message instead of putting in Comments and I will respond.

15 January 2016

Puzzle: Inverted License Plates (or why Sharmila does not go for lunch with me anymore :-) )

A couple of days back, after Sharmila had returned from India, we went out for lunch. We were discussing her experiences in India when the topic went to the new restrictions of driving in New Delhi. If you were not aware, New Delhi has promulgated new rules (I am not sure if it is effective still) that stipulates that cars with odd or even number license plates can be driven on alternate days. So, one day, if cars with only even number license plates can be driven, the next day it would be for the cars with odd number license plates. This, if I am not very mistaken, is to keep the pollution under control.

As a side story, I am told that women drivers are exempt from this rule. Which prompted me to suggest to Sharmila that we lost a great business opportunity to sell “burkhas” (the head to toe garb that many Muslim ladies wear) in New Delhi. Who is going to figure out whether it is a guy or a girl driving once they put a “burkha” on 🙂

In any case, another idea came to mind then. How about those guys with license plates that are reversible? Like if I had a license plate “6666”, I can easily take out four screws and put them back on with the license plate looking “9999”. In practice, that is not possible since there are other things written on the license plate that will clearly expose the trick but that did give rise to today’s puzzle:

How many license plates can be there which when reversed (and reattached to the car) gives a legitimate alternate parity (odd becomes even, even becomes odd) license plate?

Assume the following:

  1. License plates are no more than 4 digits long
  2. A license plate cannot start with 0
  3. 0,1,6,8,9 are the digits that while reversed looks like legitimate digits
  4. There cannot be two license plates which look the same on the roads ever
3 January 2016

A puzzle – seemingly simple, but not quite

Here you go Debajyoti – since you were clamoring for another one. This one involves probability and can be considered very simple or very intriguing depending on your point of view…

I was having drinks with two of my friends last evening when the discussion meandered around our kids. All three of us have two kids each and no twins. Chris mentioned that his boy has really taken to high school football. The other child is less inclined towards sports and prefers to excel academically. Rick, the other friend – who is the youngest of the three of us – talked about his four year old son overjoyed with his grandparents’ visit during Christmas and all the gifts he got. Rick and his wife also just had a baby – and that was one more reason the grandparents had come – to help them around in the house.

So, now the question for you: Which of my two friends – Chris or Rick is more likely to have a daughter?