Question

अनेक शब्दों के कलए एक शब् अथवा वाक्ाोंश ककसेकहतेहैं? उदहारण

देकर समझाइए। easy for class 1​

Answer 1

Answer:

Sum of first

′

n

′

natural numbers is given by

2

n(n+1)

∴ Mean of these

′

n

′

natural numbers will be

n

2

n(n+1)

=

2

n+1