Math Is Fun Forum

so true. their answer depends on the ways you solve, how you look at the problem, etc. this one was a little ... over the edge. who would have thought of a sequence consisting add, subtract, multiply, and division of prime numbers?

yup

yes, they post it tomorrow

not really usually senior question are easier this one just ... dunno lack information or something. for instance, the code you found yesterday is perfectly reasonable

yeah thats waht i think

i dont know it was just for fun sortof
i was looking at the numbers and was adding stuff and found it. i didnt expect it to work

i'm not sure if its a coincidence, but look what i just found:
the last 2 numbers of sequence is "1156, 1125" add their first 2 values, or ones, gives us 256 and 225, which turns out to be both perfect square, and in order: they are 14,15 (14^2, 15^2)

www.mathwizz.com
but you need a user id and pass word you can use mine

i kind of thought about that, but the first two lists they just increase all the way, and the last one decrease to 1125 from 1156. another mystery.

it's from a contest  online. what i posted previously was all that was to the question. the sequence looks kind of odd, so i reckon there is a "semi-mathematical" sequence behind it. do you have any suggestions what the next number can be, just any random suggestion?