Simran asked in Math

Plzz help
Jesko jetne ate hai ans de plz

Thank You

Sneha Apar answered this

Dear student,

The solution for 2nd question is as follows :

The arithmetic mean, or simply the mean or average when the context is clear, is the sum of a collection of numbers divided by the count of numbers in the collection.

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Sum of first n natural numbers = n(n+1)2
Kindly post your other queries in a different thread.