How many keys are on a standard piano keyboard?
system
ek maanak piano keyboard par kitni chaabiyaan hai?
user
ek maanak piano main 7 or ek chauthai octev hote hai.haalanki yah samay ke saath badal gaya he, yah maanak antat 1890 ke dashak main maanav sunwaayee kii seemaa ke aadhaar par set kiya gaya tha (tone ko bahut kam yaa bahut adhik shaamil nahin karnaa chahta tha jaise ki unhen ausat maanav kaan dwaara aaraam se nahin suna ja saktaa tha).
assistant
<|system|>
</s>
<|user|>
ek maanak piano keyboard par kitni chaabiyaan hai?</s>
<|assistant|>
ek maanak piano main 7 or ek chauthai octev hote hai.haalanki yah samay ke saath badal gaya he, yah maanak antat 1890 ke dashak main maanav sunwaayee kii seemaa ke aadhaar par set kiya gaya tha (tone ko bahut kam yaa bahut adhik shaamil nahin karnaa chahta tha jaise ki unhen ausat maanav kaan dwaara aaraam se nahin suna ja saktaa tha).</s>
