The Guardian Nigeria

How to look like a genius with simple math tricks

Learn easy mental maths tricks for percentages, multiplying by 11 and the Rule of 72 to boost everyday confidence.
The Cool Down

Homeowner shares reaction after getting first electric bill since installing high-tech HVAC: 'I was almost afraid to open [it] today'

Their home is a newly built, 2,000-square-foot open floor plan in Rhode Island, equipped with Mitsubishi SUZ KA30 and KA24 ...