Vedic Maths is an ancient Indian system of mathematics that is based on 16 sutras, or word-formulas, and 13 sub-sutras, or corollaries. One of the most well-known Vedic Maths tricks is for finding the square root of a number. Here is how it works:
Step 1: Find the largest square that is less than or equal to the given number. Let’s call this square “A”.
Step 2: Subtract A from the given number to get “B”.
Step 3: Divide B by twice A to get “C”.
Step 4: Add A and C to get the approximate square root of the given number.
Step 5: If the approximate square root is not accurate enough, repeat steps 2-4 with the new number instead of the original number until you get the desired level of accuracy.
Let’s take an example to illustrate this process. Suppose we want to find the square root of 73.
Step 1: The largest square less than or equal to 73 is 64 (which is 8 squared).
Step 2: 73 – 64 = 9
Step 3: 9 / (2 x 8) = 0.5625
Step 4: 8 + 0.5625 = 8.5625 (approximate square root)
Step 5: If we want more accuracy, we can repeat steps 2-4 with the new number 9 instead of 73.
This Vedic Maths trick can be quite useful for finding square roots quickly, especially for large numbers that are not perfect squares.