Question

Find sum of 3+5+7+...... 21 term​

Answer 1

Answer:

A21=a+(n-1)d (a= first term), (n=no. of terms ),(d=common difference )

a=3,n=21,d=2

A21 =3+(21-1)2

A21=3+40

A21=43 ans..

hope it helped..

Answer 2

Answer:

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