perplexus.info :: Sequences : Eight Product Exercise

Eight Product Exercise (Posted on 2015-03-02)

A sequence {A(n)} for n = 1 to 8 is defined as:
A(1) = 2015, A(2) = 2/A(1), A(3) = 3/A(2), .....
A(7) = 7/A(6) and A(8) = 8/A(7)

Find A(1)*A(2)*....*A(8)

Submitted by K Sengupta

Rating: 4.0000 (1 votes)

Solution: (Hide)

A(1) = 2015,
A(2) = 2/A(1),
A(3) = 3/A(2),
(A(1) *A(2) = 2;
A(3) * A(4) =4, etc
So the product is 2*4*6*8=16*24=384

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Who do we appreciate?	Math Man	2015-03-02 20:42:34
short solution	Ady TZIDON	2015-03-02 10:06:15

Please log in:

Login:
Password:
Remember me:

Sign up! \| Forgot password

Search:

Search body:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (5)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info