TL;DR: Amazon's popular eero 6+ Mesh WiFi Systems are on sale for $194.99, letting shoppers

IQ tests offer a formula that allows you to compare yourself to other people and see how average (or above average) your intelligence is. The Cognitive Reflection Test (CRT) is dubbed the world’s shortest IQ test because it consists of just three questions. It assesses your ability to identify that a simple problem can actually be harder than it first appears. The quicker you do this, the more intelligent you appear to be. Here are the three questions: 1. A bat and a ball cost £1.10 in total. The bat costs £1.00 more than the ball. How much does the ball cost? 2. If it takes five machines five minutes to make five widgets, how long would it take 100 machines to make 100 widgets? 3. In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake? Sign up to our free Indy100 weekly newsletter Here is what a lot of people guess: 1. 10 pence 2. 100 minutes 3. 24 days These answers would be wrong. When you're ready, scroll down for the correct answers, and how you get to them: 1. The ball would actually cost 5 pence or 0.05 pounds If the ball costs X, and the bat costs £1 more, then it will be: X+£1 Therefore Bat+ball=X + (X+1) =1.1 Thus 2X+1=1.1, and 2X=0.1 X= 0.05 2. It would take 5 minutes to make 100 widgets. Five machines can make five widgets in five minutes; therefore one machine will make one widget in five minutes too. Therefore if we have 100 machines all making widgets, they can make 100 widgets in five minutes. 3. It would take 47 days for the patch to cover half of the lake If the patch doubles in size each day going forward, it would halve in size going backwards. So on day 47, the lake is half full. In a survey of almost 3,500 people, 33 per cent got all three wrong, and 83 per cent missed at least one. While this IQ test has its shortcomings – its brevity, and lack of variation in verbal and non-verbal reasoning - only 48 per cent of MIT students sampled were able to answer all three correctly. Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

PLANO, Texas--(BUSINESS WIRE)--Jun 14, 2023--

UPDATE: Jun. 21, 2022, 3:25 p.m. EDT This story has been updated to reflect the

Microsoft will take a non-voting, observer position on OpenAI's board, OpenAI said on Wednesday, adding that Sam Altman

Erica Marsh quickly rose to fame earlier this year as a viral left-wing voice on social media. Her incendiary tweets, often ultra-liberal and hyper-political, drew millions of views and the ire of conservatives, who pointed to her outlandish comments comparing Republicans to pedophiles and conservative Supreme Court justices to Nazis as examples of extreme liberalism run amok.

JD.com reports third-quarter earnings and revenue that beat analysts' estimates, Berkshire Hathaway purchases a stake in Sirius XM in the third quarter, and Nvidia shares close higher for the 10th session in a row.

If you recently plugged in a third-party accessory to your Xbox Series X and got

Plug Power reports a third-quarter loss wider than a year earlier and revenue that misses analysts' expectations, while Trade Desk's outlook for the fourth quarter is shy of Wall Street estimates.

Indonesia will temporarily relax rules that have slowed development of solar energy in the coal-dependent country, lifting one

A never-before-seen ore containing vast quantities of an element widely used in semiconductors has been found in China in a discovery that could propel new advances in battery technology. Geologists found rare earth metal niobium inside the new ore named niobobaotite from north China’s Inner Mongolia. The rare earth metal is widely used in alloys for jet engines and rockets and has also been shown to have exceptional current conducting properties in low temperatures. Some researchers have said batteries made from niobium have several advantages over traditional lithium-ion batteries. The main source of niobium until now has been from the ore mineral columbite that is extracted widely in Canada, Brazil, Australia and Nigeria, with China obtaining nearly 95 per cent of the element for its steel industry via imports. If geologists can prove that sufficient volume and quality of niobium can be extracted from niobobaotite, experts said it could help make China “self-sufficient”, reported the South China Morning Post newspaper. The niobobaotite ore has received official approval from the International Mineralogical Association’s classification committee, according to the China National Nuclear Corporation, a state-run enterprise responsible for overseeing China’s civilian and military nuclear programmes. The Brazilian Metallurgy and Mining Company (CBMM) has been working on new projects towards the use of niobium to make advanced lithium-ion batteries. China’s state news agency Xinhua reported earlier this year that CBMM is partnering with universities, research centres and battery makers to improve the use of the rare earth element in lithium batteries. Niobium batteries are expected to bring several advantages over traditional lithium-ion batteries that tend to pose challenges like safety risks, short life cycles and long charging times, Antonio Castro Neto, director of the National University of Singapore’s Centre for Advanced 2D Materials, said earlier this year. “We have made significant progress in our development of niobium-graphene batteries which are proving to be a game changer in safety, efficiency, and sustainability,” Dr Neto said. Researchers said the performance duration of niobium-graphene batteries can be 10 times longer than traditional lithium-ion batteries, thus making them last for an estimated 30 years and make them more durable and reliable as well. These batteries, currently in development, can also be fully charged in less than 10 minutes, they said. “As they have a longer lifespan, the new graphene-niobium batteries significantly reduce total cost of ownership compared to existing lithium-ion batteries and have ultrafast charging capabilities. In addition, they offer higher safety as they do not risk explosion even in high temperatures,” Rogerio Ribas, CBMM’s global head of batteries, said in a statement. Read More China’s ‘government-approved’ AI chatbot says Taiwan invasion is likely Australian-Chinese journalist detained for 3 years in China returns to Australia Driver killed after crashing into Chinese consulate in San Francisco had knives and crossbow EU asks Elon Musk to ‘walk the talk’ on X/Twitter disinformation over Hamas attack Earth hit by a huge solar storm that would devastate civilisation, trees show Viral WhatsApp warning of cyberattack targeting Jewish people is fake

NEW YORK--(BUSINESS WIRE)--Aug 21, 2023--