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Identity: (a + b)² = a² + 2ab + b²

Srinivasa Ramanujan was a self-taught Indian mathematical genius.
Born: 1887 in Erode
Discovered many advanced formulas in number theory and infinite series
Invited to University of Cambridge by G. H. Hardy
Became Fellow of the Royal Society (1918)
Died: 1920 at age 32
He is famous for extraordinary intuition and the number 1729.

Here’s a cool math trick for quick multiplication:

Multiply Any Two-Digit Number by 11

Want to quickly multiply a two-digit number by 11? Follow this trick:

Example: 32 × 11

1. Split the digits: 3 and 2.

2. Add them together: 3 + 2 = 5.

3. Place the sum in the middle: The answer is 352.

So, 32 × 11 = 352.

Another Example: 47 × 11

1. Split the digits: 4 and 7.

2. Add them together: 4 + 7 = 11.

3. If the sum is greater than 9, carry over:

The last digit is 7.

The middle number is 11, so place 1 in the middle and carry 1 over to 4.

4 + 1 = 5.

So, 47 × 11 = 517.

It works for any two-digit number!