SOLUTION: A number sequence is as follows: 4, 8, 12, 16, 20, 24, .... If 4 is the 1st number in the sequence what is the sum of the first 300 numbers in the sequence?

Question 1013654: A number sequence is as follows: 4, 8, 12, 16, 20, 24, .... If 4 is the 1st number in the sequence what is the sum of the first 300 numbers in the sequence?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Couple of ways to do that...here's one way...
The sum of the first 300 integers: 1,2,3,4,5,... is found by
S = n(n+1)/2 = 300*301/2 = 45150
but since our sequence is four times that, that is, ours goes by 4,8,12,16,...,
we will merely multiply our answer by four and get
S = 4*45150 = 180600
RELATED QUESTIONS
if the number of the sequence is 12 and the 2nd is 3 what is the 1st... (answered by Fombitz)

The sum of an AP is 20 the 1st term being 8 and the common difference is -2 find the... (answered by mananth)

What is the next number in the sequence? 3, -6, 12, 4, 20,... (answered by checkley77)

What is the next number in the sequence 3, -6, 12, 4, 20? (answered by Alan3354,ikleyn)

What is the sum of the geometric sequence 1, 4, 16, ... if there are 8... (answered by stanbon)

3, -6, 12, 4, 20, ? what is the next number in... (answered by ikleyn)

The sum of numbers in a sequence is 17, if the second is 3, what is the first number? (answered by Finlay)

if the total number of sequence is 17 and the second number in the sequence is 3, what is (answered by Fombitz)

What is The next number in the sequence 3, 2, 6, 4, 9, 6, 12,... (answered by MathIsHard_Yay)