Editors Pick
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Number Theory: How global mayhem affected Indian markets
Updated on Apr 08, 2025 07:32 AM IST
The following charts examine how the crash unfolded and what history tells us about periods of extreme market turbulence
Problematics | The renovated guesthouse
Given two bills for paint, lights and fans without being told any of the individual prices, can you work out the amount of a refund?

Updated on Apr 07, 2025 01:07 PM IST
Number Theory: How will tariffs hit India in the medium term?
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Published on Apr 07, 2025 08:51 AM IST
Number Theory: What Trump’s tariffs mean for US
How will the latest tariffs affect US consumers? Here is what the data shows

Updated on Apr 05, 2025 09:32 AM IST
Weather Bee: Why India's average maximum is keeping cool despite heat waves
Extending this analysis for the period starting March 21 suggests that the trend seen in early March continued

Updated on Apr 05, 2025 08:59 AM IST
Number Theory: US has a problem and tariffs will not solve it
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Published on Apr 04, 2025 09:16 AM IST
How leading economists are reacting to Trump’s new ‘Liberation Day’ tariffs
French economist and former IMF chief economist Olivier Blanchard said the overall results of the tariffs would be “a recession, no gain. A general mess"

Updated on Apr 03, 2025 04:32 PM IST
Sreedev Krishnakumar, Mumbai
How Donald Trump decided the tariff for India
Some experts have suggested that Trump’s calculations of tariffs imposed by a specific country could have nothing to do with tariffs at all

Updated on Apr 03, 2025 10:14 AM IST
Number Theory: Reciprocal US tariffs will spark major chaos
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Published on Apr 03, 2025 09:09 AM IST
Number Theory: Why “liberating” US will take more than tariffs
Trump is claiming that the move, its global disruption notwithstanding, will revive the fortunes of the American economy and its working people

Updated on Apr 02, 2025 09:46 AM IST
Problematics | Matches with sachets
Matchboxes and shampoo sachets are bought and then sold at a profit. With limited information, can you find out how many there are of each?

Updated on Mar 31, 2025 08:20 AM IST
HistoriCity: From Mithra to Soma, ancient links that connect Parsis and Hindus
Nowroz, a Farsi (Persian) term translating to ‘new day’, is a vibrant spring festival celebrated across multiple countries

Published on Mar 28, 2025 09:14 AM IST
Number Theory: Global energy demand, supply trends explained
To be sure, the threshold has been defined for longer-term averages rather than just a year

Updated on Mar 28, 2025 07:24 AM IST
The 40°C threshold is hit earlier and lasts longer
An HT analysis of the IMD's gridded database shows that the 40°C heat threshold now arrives earlier in most places and lasts longer.

Updated on Mar 27, 2025 05:51 PM IST
Problematics | Music old style
This week’s puzzle revisits the record player. What distance does the stylus, or needle, travel along an LP disc?

Published on Mar 24, 2025 11:25 AM IST
Number Theory: Indian multilingualism in perspective
A detailed analysis of the data shows that the picture is more nuanced than it appears from the headline numbers

Updated on Mar 20, 2025 10:51 PM IST
Number Theory: Why diversity is important in understanding state finances
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Updated on Mar 18, 2025 09:34 AM IST
Problematics | Chaplin vs Ray vs Hitchcock
They are part of a bowling line-up with Kurosawa and Renoir completing the attack. Find out which bowler took how many wickets in how many overs.

Published on Mar 17, 2025 10:16 AM IST
Number Theory: India's liquor sector aims for growth cocktail
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Published on Mar 13, 2025 09:35 AM IST
Problematics | A winner from long ago
You have one tournament, six teams, and about half a dozen trends. Find the results of all 18 matches.

Published on Mar 10, 2025 01:31 PM IST
Number Theory: Are airfares higher than they should be in India?
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Updated on Mar 10, 2025 08:46 AM IST
Number Theory: What does suspension of US aid mean for Ukraine?
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Updated on Mar 07, 2025 09:43 AM IST