NCERT Figure it Out 5 - Q1 - A Story of Numbers
Question: Write in the chapter's base-5 landmark system: 15, 50, 137, 293, 651.
Answer: 15=5+5+5; 50=25+25; 137=125+5+5+1+1; 293=125+125+25+5+5+5+1+1+1; 651=625+25+1.
Full step-by-step NCERT solution with diagrams on Something by Zero.