The Vilokanam Sutra simply means "By Mere Observation." It teaches us that sometimes, the answer to a complex-looking problem is right in front of us—we just need to know how to look!
Vilokanam is a Sanskrit term meaning "observation". This sutra encourages mental math by suggesting that many problems, especially in algebra and divisibility, can be solved instantly by recognizing patterns rather than performing tedious calculations.
"A number is divisible by 9 if the sum of its digits is divisible by 9."
Enter any number to see if it's divisible by 9.
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