Dr. Emma Chen, a renowned mathematician, has set the international math community abuzz with her latest numerical sequence puzzle. This challenging brain teaser has stumped even the most brilliant ...

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The missing number is 1,620. The digits in the tens places (green in the figure below) of the numbers in columns 1, 2, 4 and 5 are added together. The total value is represented by the digits in the ...

E= (A+B) - (C-D) where A=7, B=5, C=6, and D=3 If you observe the sequence of table above, 1, 3, 5, 9, 11, 13 are increasing with a difference of 2 and 1, 2, 3, 5, 6 ...

A challenging arithmetic puzzle, presented as an image, tests readers' cognitive abilities. The puzzle involves finding a missing number in a sequence within seven seconds, assessing IQ and critical ...

Rita was a Managing Editor at Android Police. Once upon a time, she was a pharmacist as well. Her love story with Android started in 2009 and has been going stronger with every update, device, tip, ...