SOLUTION: Find the missing number in the pattern? 1600,400,100, what’s next number?

Question 1174211: Find the missing number in the pattern?
1600,400,100, what’s next number?
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52788)   (Show Source): You can put this solution on YOUR website!
.

Isn't it OBVIOUS ?

Or you need my formal confirmation with my signature ?

//////////////

To make you smiling, let me tell you that the missing number is what the author of this problem missed . . .

(or keeps in his mind secretly from us . . . )

One more joke on the same line:

            when I miss some thing in my house, and can not see it, I always say to myself:

                    this thing is there, where I can not see it.

            Believe or not, it always helps me to find the missed thing.

            You may try it on your own (!)

Thus visiting this forum, you may get useful practical advises (!)

Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
Look for a common ratio.
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