I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
i agree with Dave UK first diff: 8 second diff: 9 third diff: 7 fourth diff: 2 fifth diff: -6
diff between 1st and 2nd differences: 1 diff between 2nd and 3rd differences: -2 diff between 3rd and 4th differences: -5 diff between 4th and 5th differences: -8 diff between 5th and 6th differences should be -11, because it keeps decreasing by 3.so if the difference between -6 and the next number is -11, than you add -11 to -6 = -17. this is the difference between 23 and the next number so 23 plus -17= 6.
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I think the answer is 6. The difference of the difference of the differences is constant at 3.
ReplyDeleteI think its 15
ReplyDeletei agree with Dave UK
ReplyDeletefirst diff: 8
second diff: 9
third diff: 7
fourth diff: 2
fifth diff: -6
diff between 1st and 2nd differences: 1
diff between 2nd and 3rd differences: -2
diff between 3rd and 4th differences: -5
diff between 4th and 5th differences: -8
diff between 5th and 6th differences should be -11, because it keeps decreasing by 3.so if the difference between -6 and the next number is -11, than you add -11 to -6 = -17.
this is the difference between 23 and the next number so 23 plus -17= 6.
ah yea, im that smart.