Question

if Sn denotes the sum of first n terms of an AP. Then S2-S1=_______ ​

Answer 1

Answer:

Given,

Sn denotes sum of first n terms in A.P

then,

S2-S1=_______

here,

S2 denotes sum of first 2 terms of A.P

S1 denotes the first term of A.P

then,

Their difference will give you 2nd term of A.P

For example;

1,2,3,4...... are in A.P

here,

S1=1

S2=1+2=3

then,

S2-S1=3-1=2

which is 2nd term of A.P

HOPE THAT HEPLS!!!