Multiplying by 9, 99, 999
AI-drafted · awaiting admin review
Ekanyūnena Pūrveṇa: by one less than the previous one.
एकन्यूनेन पूर्वेण
Ekanyūnena Pūrveṇa
Meaning: By one less than the previous one
Example: 63 × 99
- One less than 63 is 62.
- Subtract 62 from 99: 37.
- Join them.
Answer: 6237
When multiplying a number by a string of 9s with the same number of digits, the left part of the answer is one less than the number, and the right part is the 'nines complement' of that left part.