SOLUTION: Is it A? I want to check my answer. Consider the sequence: 5, 7, 11, 19, 35,.... Write an explicit definition that defines the sequence: A. B. C. D.

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Question 1161218: Is it A? I want to check my answer.
Consider the sequence:
5, 7, 11, 19, 35,....
Write an explicit definition that defines the sequence:

A.
B.
C.
D.

The question for the sequence and the question itself is provided in the link here: https://i.imgur.com/TZclRL4.png

Found 3 solutions by ikleyn, MathTherapy, MathLover1:
Answer by ikleyn(52780) About Me  (Show Source):
You can put this solution on YOUR website!
.

No, it is not A.

Notice that the distance between every two adjacent terms INCREASES with "n".

So, it can not be NEITHER A nor B.

Next, you can to choose between C and D by making some trials.

There is NOTHING DIFFICULT in it . . .



Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

Is it A? I want to check my answer.
Consider the sequence:
5, 7, 11, 19, 35,....
Write an explicit definition that defines the sequence:
A.
B.
C.
D.

The question for the sequence and the question itself is provided in the link here: https://i.imgur.com/TZclRL4.png
No, it's NOT A.
I see you got CAUGHT thinking that itw's choice A. because choice A. works for the 1st 2 terms.
Unfortunately though, choice A. doesn't work for the other 2 terms!

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

it's a%5Bn%5D=2%5En%2B3 where n=1,2,3........
check:
n=1
a%5B1%5D=2%5E1%2B3=2%2B3=5
n=2
a%5B2%5D=2%5E2%2B3=4%2B3=7
n=3
a%5B3%5D=2%5E3%2B3=8%2B3=11

n=4
a%5B4%5D=2%5E4%2B3=16%2B3=19

n=5
a%5B5%5D=2%5E5%2B3=32%2B3=35