Spot on (a mathematical brain-teaser game)

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Ribbie Danzinger

Mon, Dec 31 2007, 4:51 pm

This is a maths game (a bit different from the usual word games). The rules are that one poster posts five random whole numbers between 1 and 10, one random whole number between 10 and 100 and one random whole number between 100 and 1000. The next poster has to try and get as close to the three-digit number as possible by using the five single digit numbers, the two digit number and regular mathematical functions (+, -, *, /). It is not necessary to make use of all the numbers.

Example:

6, 5, 2, 9, 1, 72

385

Answer: 72*6 (= 432) - 5*9 - 2 = 385

Ten points if you get spot on! Five if you are 1 above or below, one point for being 2 above or below.

Count your points and set up the numbers for the next poster to answer (don't bother trying to work them out before you post).

(You are not allowed to answer your own posts!)

Here's the first one:

2, 5, 6, 7, 1, 54

548

GetReal

Mon, Dec 31 2007, 5:11 pm

(1+2+7) x 54 (= 540) + 1 + 7 = 548

3, 9, 2, 6, 4

36

954

roza

Mon, Dec 31 2007, 5:16 pm

548

2, 5, 6, 7, 1, 54

(2 * 5 * 54) + 7 + 1 = 548

===========================

5 9 7 3 2 88

775

greenfire

Mon, Dec 31 2007, 5:34 pm

who ever said my brain still works ... What

GetReal

Mon, Dec 31 2007, 5:42 pm

(9 x 7 ) + 2 + 2 + 88 (= 155) x 5 = 775

========================

Reposting what I posted above

3, 9, 2, 6, 4

36

954

Ribbie Danzinger

Mon, Dec 31 2007, 5:42 pm

Two important points I forgot to add: 1. You are allowed to use each number no more than once unless it appears more than once in the list (sorry GetReal, your answer doesn't count because you used the 1 twice. Take 2 points for trying and please try again!)
2. If two people post with answers to the same question, the next poster gets to solve both their questions (thereby gaining more points!)

Don't forget to keep score of your points. (Roza, you have 10 points)

775

88*9 - (2*5 + 7) = 775

My score is 10
______________________-

5, 6, 4, 8, 3, 82

569

GetReal

Mon, Dec 31 2007, 5:44 pm

Ah, now you tell me!

roza

Mon, Dec 31 2007, 5:51 pm

569

(82 * 4) + (6 * 5 * 8 ) = 568

my score is 15

=============

5 6 9 1 2

51

420

Ribbie Danzinger

Mon, Dec 31 2007, 5:57 pm

420

(51-9)* 2*5 = 420

My score is 20

_______________

4, 5, 6, 4, 8, 63

671

roza

Mon, Dec 31 2007, 6:22 pm

671

((6 + 4) * 63) + (5 * 8 ) = 670

score-20

==================

6 6 9 1 5

79

921

imamothertoo

Mon, Dec 31 2007, 7:58 pm

(6+1)x5x6+(79x9)=921

3 4 6 8 9
22
748

leomom

Mon, Dec 31 2007, 9:03 pm

( (9 * 6) - (3*8 - 4) ) * 22 = 748

10 points! Very Happy

_____________

8 3 6 1 8 35

270

frayda

Tue, Jan 01 2008, 3:40 am

(35x6) + (8x8) - (3+1) = 270

My score: 10pts

___________

7 4 8 2 9 84

468

Ribbie Danzinger

Tue, Jan 01 2008, 5:38 am

468

(7*8 - 4)* 9 = 468

my score is 30 points
__________________

7, 8, 3, 5, 7, 45

498

frayda

Tue, Jan 01 2008, 6:09 am

45*(7+3) + (5*8 ) +7 = 497

My score is 15 points

_________________

4, 3, 1, 8, 7, 59

672

roza

Tue, Jan 01 2008, 3:22 pm

4, 3, 1, 8, 7, 59

672

((4 + 7) * 59) + (3 * 8 ) - 1 = 672

my score is 30

-----------------------------

2 9 8 4 5

27

386

Ribbie Danzinger

Tue, Jan 01 2008, 4:11 pm

386

27*(9+5)+8=386

My score is 40

----------------

4, 8, 6, 5, 3, 58

853

GetReal

Tue, Jan 01 2008, 5:00 pm

(5*3) * 58 (= 870) - 8 - 6 - 4 = 852

----------------

5, 9, 7, 7, 3, 31

345

Ribbie Danzinger

Tue, Jan 01 2008, 5:21 pm

5, 9, 7, 7, 3, 31

345

31*(5+7)-(3*9)=345

my score = 50
_______________

5, 3, 5, 8, 6, 21

547

ohbaby!

Tue, Jan 01 2008, 5:28 pm

heeelp! im lost! Confused

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