Question

Find sum of odd numbers 1+3+5+....+45+47+49.

Answer 1

Answer:

${n}^{2}$

is the sum of first n odd number

Step-by-step explanation:

so

${n }^{2} = {25}^{2} = 625$

NOTE- people often mistake value of n as 49... 49 is value of last term it is not a value of n ..

49 =(2n-1)

2n = 50

n= 25

Answer 2

Answer:

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