Question

Consider the arithmetic sequence 1.6.11..
a) What is its common difference ?
b) What is its 20" term ?
c) What is its algebraic form?​

Answer 1

Answer:

I hope It helps you ....................

Answer 2

Answer:

a) common difference (d)=a2-a1:6-1=5

b) a20=?

an=a+(n-1)×d

a20=1+(20-1)×5

a20=1+19×5

a20=1+95

a20=96

c). general form of Ap: a,a+d,a+2d,a+3d........

Nth term of AP :an=a+(n-1)×d

sum of terms in AP:An=n/2(a+an)