Question

Calculate the different between the sums of the first 20 terms of the arithmetic sequences 6,10,14.. And 15,19,23...

Answer 1

Answer:

First one:880 Second one do by yourself seeing the explanation of the first one.

Step-by-step explanation:

Series:- 6,10,14,..

First term(a)=6

Common Difference(d)=10-6=4.

Number of terms required(n)=20.

Therefore,

S=n/2{2a+(n-1)d}

S=20/2{2*6+(20-1)4}

S=10*88=880

Therefore sum of the terms is 880

Answer 2

Answer:

Step-by-step explanation: