<prompt> Netefatsa hore 12345 e lekana le 15.nan  <response>: Instruction in English: Prove that 12345 is equal to 15. . Response in English: There are a few ways to prove that 12345 equals to 15. Method 1: Direct CalculationWe can solve it by directly adding the numbers in sequential order from left to right:1 2 33 3 66 4 1010 5 15Thus, 12345 15Method 2: Grouping and RearrangingAnother way to prove it is through grouping and rearranging the sequence: We can group the first and the last number, and the second and the second-last number, and so on.15 24 3 6 6 3 12 3 15Thus, 12345 15.Method 3: The Arithmetic Series FormulaThe sum of the first n numbers in an arithmetic series can be calculated using the formula: S n2 a lwhere n is the number of terms, a is the first term, and l is the last term. In the case of the sequence 12345, there are 5 terms, the first term is 1 and the last term is 5. Plugging these values into the formula, we get:S 52 1 5 52 6 15Thus, 12345 15.All these methods confirm that the sum of the sequence 12345 is indeed equal to 15. . Response in Sesotho: Ho na le mekhoa e maloa ea ho paka hore 12345 e lekana le 15. Mokhoa oa 1: Palo e Otlolohileng Re ka e rarolla ka ho kenya linomoro ka ho toba ka tatellano ea tatellano ho tloha ho le letšehali ho ea ho le letona: 1 2 3 3 3 6 6 4 10 10 5 15 Kahoo, 12345 15 Mokhoa oa 2: Ho hlopha le ho hlophisa bocha Mokhoa o mong oa ho paka ke ka ho hlophisa lihlopha le ho hlophisa tatellano bocha. : Re ka hlophisa palo ea pele le ea ho qetela, le ea bobeli le ea bobeli-ea ho qetela, joalo-joalo. 15 24 3 6 6 3 12 3 15 Kahoo, 12345 15. Mokhoa oa 3: Arithmetic Series Foromo Kakaretso ea linomoro tsa pele tsa n letotong la lipalo li ka baloa ho sebelisoa foromo: S n2 a l moo n e leng palo ea mantsoe, a ke nako ea pele. , me ke nako ea ho qetela. Tabeng ea tatellano ea 12345, ho na le mantsoe a 5, lentsoe la pele ke 1 le nako ea ho qetela ke 5. Ho kenya litekanyetso tsena ka foromo, re fumana: S 5 2 1 5 52 6 15 Kahoo, 12345 15. Mekhoa ena kaofela e tiisa hore kakaretso ea tatelano 1234 5 ehlile e lekana le 15. 