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Mam
Jahan tak samjhane ki baat hai bachche ko to hum number line pe use explain kar sakte hain, but fir wo kehte hain ki iska real life application kya hai, significance kya hai, tab hum yeh keh sakte hain ki positive numbers to netural numbers hain, i mean they actually are the integers. But negative numbers are actually hidden or say virtual, we can call them dummy variables. Hote hain par dikhte hain. For example = agar maine kisi ko 100 rs diye, to iski jagah hum yeh bhi keh sakte hain ki humne usse (-100) rupaye liye. Kehne ka seedha matlab hai ki agar koi baat reverse order mein kahi jaye, to negative numbers use honge. Ab student yeh kahega ki baat ulti kahen hi kyun, agar seedhe bol kar kaam ho raha. To answer yeh hai ki maths mein aksar questions mein baat reverse direction mein kahi jati hai, to wahan inka use hota hai bas. Isi wajah se positive integers ko netural numbers kehte hain.