RESIDUES OF TWO OR MORE PLANETS GIVEN Rules relating to the two cases: (i) when the sum or difference of the residues (of revolutions) of any two planets is given, and (ii) when the residues for two or more planets are given separately: 52. When the sum of the residues (of revolutions of two or more planets ) is given, proceed with the sum of their revolu- tion-numbers (as the dividend); and when the difference between the residues (for any two planets) is given, proceed with the difference of their revolution-numbers ( as the dividend ). When the residues (for two or more planets) are given (separately), think out the method of solution by the help of the given residues and the true revolution-numbers of the given planets. These rules will be clear from the following solved examples. Example 1. "The sum of the (mean) longitudes of Mars and the Moon is calculated to be 5 signs, 7 degrees, 9 minutes, (9 seconds, and 6 thirds). O you, well versed in the (Arya )bhata-tantra, quickly say the ahargaṇa and also the (mean) longitudes of the Moon and Mars."¹ The revolution-number of the Moon = 57753336. The revolution-number of Mars 2296824. 60050160. 1577917500. Their sum The number of civil days in a yuga The H. C. F. of 60050160 and abraded sum of the revolution-numbers and the abraded number of civil days = = 43 1577917500 is 60. Therefore, the of the Moon and Mars 60050160 60= 1000836, =1577917500 60-26298625. The sum of the mean longitudes of the Moon and Mars =5 signs 7° 9' 9" 6" -33944946 thirds. Therefore, by stanza 46(ii), the residue of revolutions=11480265. We have, therefore, to solve the equation 11480265 1000836 x 26298625 = y, ¹ Bhaskara I's example (MBh, viii. 19) with Govinda Svami's modification.
