Question

If 3 to the power 1/2,7,10 to the power 1/2,14 are in an ap then find Sn

Answer 1

Sn=n/2×(a+ l)

$4 \div 2 \times (\sqrt{3} + 14)$
Sn=2×(1.732 +14)
=2×15.732)
=31.464