Puzzles Editor Kabir Firaque is the author of the weekly column Problematics. A journalist for three decades, he also writes about science and mathematics.
Articles by Kabir Firaque
The body breaks alcohol down into different compounds. Methanol, used to prepare hooch, gets converted into toxic compounds
Here's a puzzle that's not as difficult as it may seem. Can you solve it with calculations on relative velocity? Or is there a simpler way?
Bio-engineering is yet to solve for dexterity for robots. Sure, science fiction predicts the future, and they’ll take over the earth some day. Just not yet.
Radiocarbon dating may work on cement if there's organic material inside it. For rock, there are other processes, with limitations
What is there more of, milk in the glass of water, or water in the bottle of milk? Try to keep it simple.
The human reference genome has just got an upgrade: it is now a “pangenome” to represent more diversity between various individuals and populations.
This one belongs to a family that we call Einstein puzzles. I have adapted my 1993 original just a little bit, for 2023 readers.
Popular narrative sees her as a scientist whose data was stolen. But she must be remembered as an equal contributor, write researchers revisiting her story
This week, we try a different multiplication method and a puzzle including substitution and addition. Good luck!
What has changed in the genomic make-up of various mammals over 100 million years of evolution, and which parts of the genome have been conserved?
A puzzle made from a Russian original, involving cats and mice, and another from betting at a casino, involving wins and losses. Good luck!
The National Quantum Mission aims to explore the potential of quantum technology in four domains with a budget of ₹6,000 crore.
What is the point of measuring temperatures in different ways, and what is the role of humidity in these? HT explains.
This week, we have a one-of-its-kind magic square and a math problem. Good luck!
Last week, CR Rao was awarded the 2023 International Prize in Statistics. The announcement dwells on three concepts. What are they and why are they important?
This week, I bring you two puzzles: One involves a game from the past and the other, a sneak peek into a part of my day. Good luck!
How many years would it take to count to this tally, at a number per second? How many squares on a chessboard, if each held twice the sum of its predecessor?
From slope angle to nature of precipitation, here's what you need to understand
This week, we bring to you a party trick with a (slightly) lengthy description and a strange equation of 1s and 0s. Good luck!
This week, we have challenging puzzles, one involving speed and distance and the other, a list by Isaac Asimov, giving both our puzzles a touch of unusualness. Good luck!
Covid origin: Scientists on Tuesday published arguments in favour of the theory that the virus possibly infected the first humans at Wuhan’s animal market. The scientists make a strong case for their argument but the analysis does not conclusively establish their theory
On December 19, 2022, I invited you to crack my password to the account where I store my puzzles. Since you did, I had to change my password for security reasons — and I used JAMIE LC for inspiration. Here are #Week30's puzzles.
This week's puzzles include a mischievous child, a Rubik's cube, and the Pythagorean triangle. Good luck!
A paper in Nature this week by scientists from the University of Rochester, who claim that they have created a material that achieves superconductivity at room temperature, has been met with a degree of scepticism. That is because the team’s earlier work has been controversial.
Creating a full-length Einstein puzzle, I found, can be an exhausting but ultimately rewarding exercise. Here you go.
Almost 40% of mammals by mass in the world are cattle, and with India accounting for around 30% of the world’s cattle according to the US Department of Agriculture, Indian cattle should account for around 12% of the mammalian biomass in the world
It may be fine to compare apples with oranges, but you should be wary about mixing the two, except perhaps in a fruit salad. Here’s why.
This week, one of the two puzzles may include some information you don’t really need. Good luck!
New Delhi As a tool for surveillance, the balloon might come across as dated in this age of satellites and drones
Lithium is often described as the white gold of energy storage technology; light and compact, it is the defining element in the lithium-ion batteries that drive our mobile phones, laptops and, in some cases, electric cars