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 November 23rd, 2017, 11:49 AM #1 Newbie   Joined: Nov 2017 From: Toronto Posts: 2 Thanks: 1 10 year olds math assignment challenge! The task: Using all the digits of the year 1492 only once and in the exact order that they appear in the year 1492, construct all numbers from 1 to 100! You can use any of the following operations: square root, factorials, exponents, decimals, parentheses, negative numbers, addition, multiplication, subtraction, division. Examples: 84 = 14 x √9 x 2 90 = (1+4) x 9 x 2 We still need the following numbers calculated: 40 41 49 59 61 62 64 The rest we’ve already calculated! Thanks for your help! Thanks from Spritofmaths
 November 23rd, 2017, 04:54 PM #2 Senior Member     Joined: Nov 2010 From: Indonesia Posts: 2,000 Thanks: 132 Math Focus: Trigonometry Another game, eh? Interesting... $\displaystyle 40=1\times4+9^2$ $\displaystyle 41=(1+4)+9^2$ $\displaystyle 64=(1-\sqrt4+9)^2$ I'll leave the rest to Denis McField. Thanks from Math whiz
November 23rd, 2017, 04:55 PM   #3
Senior Member

Joined: Feb 2016
From: Australia

Posts: 1,737
Thanks: 606

Math Focus: Yet to find out.
Quote:
 Originally Posted by Monox D. I-Fly I'll leave the rest to Denis McField.
He's too busy getting stoned...

Mathematical anxiety

 November 23rd, 2017, 05:05 PM #4 Global Moderator   Joined: Dec 2006 Posts: 19,951 Thanks: 1842 Perhaps Monox D. I-Fly has been doing a headstand, as 9² isn't 36. 40 = 14*√9 - 2 41 = -1 + 4! + 9*2 49 = (-1 + (√4)^(√9))^2 59 = -1 + 4*(√9)/.2 61 = -1 + 4^(√9) - 2 62 = 1*4^(√9) - 2 64 = (1*(√4)^(√9))^2 Thanks from Denis, Joppy and Math whiz
 November 23rd, 2017, 06:38 PM #5 Senior Member     Joined: Nov 2010 From: Indonesia Posts: 2,000 Thanks: 132 Math Focus: Trigonometry Oops, guess I am being stoned when doing my headstand. Well, at least my answer for 64 was correct, so my post didn't go in vain.
 November 23rd, 2017, 09:15 PM #6 Newbie   Joined: Nov 2017 From: Toronto Posts: 2 Thanks: 1 That’s awesome! Thank you!
 November 18th, 2018, 12:17 PM #7 Newbie   Joined: Nov 2018 From: Mississauga Posts: 5 Thanks: 0 Wow, you guys are smart! Can you help me with some numbers...? I need help with 27, 31, 45, 57, 55, 58, 68, 69, 70, 79, and 83
 November 18th, 2018, 12:22 PM #8 Newbie   Joined: Nov 2018 From: Mississauga Posts: 5 Thanks: 0 Oh and here are the answers to your questions... : 40= 14* squrt9 -2 41=-1+4!+9*2 49=(-1+(squrt4)^(9))^2 59=-1+4*(squrt9) divided by 2
November 18th, 2018, 12:31 PM   #9
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Posts: 2,098
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Quote:
 Originally Posted by Math whiz construct all numbers from 1 to 100!
That's a lot of numbers.

November 18th, 2018, 01:28 PM   #10
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Joined: Oct 2011
From: Ottawa Ontario, Canada

Posts: 13,590
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Quote:
 Originally Posted by Maschke That's a lot of numbers.
Sure is! I'll start:

1 = -1 * 4 + √9 + 2
2 = -1 - 4 + 9 - 2
3 = 1 * √4 + √9 - 2
4 = -1 - √4 + 9 - 2
5 = -1 * √4 + 9 - 2

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