This amazing feat was discovered by a young Nigerian based in the United Kingdom.
The mathematics prodigy is none other than Chika Ofili – a 12 year old Igbo boy. He attends the Westminster Under School in the United Kingdom.
He reportedly discovered it during the holiday after his math teacher gave him a book to read. The book apparently had methods of discovering the divisibility of numbers from 1-6. In other words, it had explanations on how to test whether a number can be divided with any number from 1-6. It did not have for 7.
Chika reportedly discovered a new method of testing for divisibility of 7. In other words, he created a new method of testing if a number can be divisible by 7.
His theory is as follows: you multiply the last digit of the number by 5 and add it to the remaining number
For instance, if you have a number like 532, you multiply the last number (2) by 5 and then add it to the first two digits (53). Applying the rules of BODMAS, the total will be 63.
Mathematically, it is as follows:
53 + 2 × 5 = 63
63 is a multiple of 7, so 532 is a multiple of 7.
He was recognized by TruLittle Hero for his contributions to the field of science. TruLittle is an organization that recognizes and rewards outstanding potentials in the UK.
Chika was awarded the Leadership Hero Award by the organization for his remarkable achievement.
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