if nth term of an Ap is 2n+1 , what is the sum of its first three terms
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1st term is 3
2nd term is 5
3rd term is 7
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an = 2n+1
=>a=2×1+1
=3
=>a2=5
=>a3=7
Sum of first 3 terms =3+5+7=15.
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=>a=2×1+1
=3
=>a2=5
=>a3=7
Sum of first 3 terms =3+5+7=15.
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Please mark it as brainliest
And
Be my follower if possible.
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