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29+1 = 30

27+3 = 30

25+3+1+1 = 30

you can take as many as you want!:))

27+3 = 30

25+3+1+1 = 30

you can take as many as you want!:))

n is the number of odd numbers you have added

so ,

n²+n=30

n²+n-30=0

⇒n²+6n-5n-30=0

⇒n(n+6)-5(n+6)=0

⇒n=5;n=-6

And n cannot be negative

so

1+3+5+7+5+9

This the method of

Arithematic progression