Sakshi, if you don't know how many zero's are there in lakhs or crore, please note the following: Thousand - 1 followed by 3 zeroes Lakh - 1 followed by 5 zeroes Crore - 1 followed by 7 zeroes Abja - 1 followed by 9 zeroes Kharva - 1 followed by 10 zeroes Nikharva - 1 followed by 11 zeroes Padma - 1 followed by 12 zeroes Mahapadma - 1 followed by 13 zeroes Shankha - 1 followed by 14 zeroes Jaladhi - 1 followed by 15 zeroes Antya - 1 followed by 16 zeroes Madhya - 1 followed by 17 zeroes Parardha - 1 followed by 18 zeroes We were taught this when we were in 4th standard.