NCERT Example - Odd as consecutive sum - Number Play
Question: Show that every odd natural number can be written as a sum of two consecutive integers. Write 15 as a sum of consecutive numbers in three different ways.
Answer: Every odd = k+(k+1). For 15: 7+8, 4+5+6, and 1+2+3+4+5.
Full step-by-step NCERT solution with diagrams on Something by Zero.