Question

I had to measure 4 things. The measurements are 2 (3/16), 1 (13/16), 1 (7/16) , 1 (1/8). What's the relationship between them? and how does this relate to perspective?

Answer 1

excuse me, where does it come from?

Answer 2

measurements are in inches

Answer 3

the numbers are getting smaller

Answer 4

why does it matter where it comes from?

Answer 5

yes, i think so, if it comes from discrete math, we can consider it is a problem of probability to find out the relationship between the numbers, if it comes from geometry, we can consider they are sides of a some shape and so on...

Answer 6

they are close to a geometric progression, with the multiplier 0.8

Answer 7

or as phi said, it just increasing number series, for example

Answer 8

its from algebra. its on sequences, perspective, and arithmetic sequences

Answer 9

at last, you give us the information to solve. I am not sure i can solve or not. if i can, i will.

Answer 10

or the difference is about 3/8 between numbers

Answer 11

thanks guys

Answer 12

the difference is 3/8 except for the last pair, where it is close, 2.5/8ths rather than 3/8

Answer 13

@ phi: when solving that kind of problem, don't we have to go to a general form first or just consider the particular numbers like this? or just guess? even we can guess or figure out the answer at the first glance, don't we have to prove our logic? I really confuse

Answer 14

even we can guess or figure out the answer at the first glance, don't we have to prove our logic? I really confuse

Yes, you would want to prove it, if you are going to claim a general result.

I am guessing that this problem involved measuring something that changes in an arithmetic way, writing down the numbers, and finding that it is indeed (to within measurement error) an arithmetic progression.