Astrology, numerology and other disciplines that claim to alter our luck have always found favour among film stars. From changing their name to even shooting with a hen (Govinda once did that), actors and actresses have done bizarre things for that elusive good luck charm. So when Rajkumar Yadav changed his name to Rajkummar Rao not many blinked. Some thought it's an adopted screen surname while others said numerology could be the reason behind this change. Now Rajkummar clears the air himself. Turns out that Rao and Yadav are both Rajkummar's family surnames. "I can use both," says Rajkummar. But then what about the extra 'm' adorning his first name? Now that's something Rajkummar adopted on the advice of his mother who is a strong believer in numerology. Sweet, we say. After all, the extra ‘m’ seems to have brought him all the luck especially after the release of Shahid.