@thinkdailly: A Tricky "Harvard" Entry Exam | Try to Solve it! #mathtrick #math #problemsolving #mathematics

Think Daily
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Thursday 17 September 2026 08:27:08 GMT
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kmjsal
K :
a = 11 b = 0 C = 10
2026-09-17 10:10:33
76
road_to_heaven_i
Midas :
a=3 b=2 c=4
2026-09-17 08:45:30
34
kevinrethwisch
kevinrethwisch :
What's the general rule for recognizing when a system of equations can be solved with fewer equations than unknowns?
2026-09-19 00:39:18
0
allroundleftie
allroundleftie :
I still don’t get it. I can do mental arithmetic from playing darts, but that’s it!😬
2026-09-18 23:25:30
0
bluscoot
Blus00t :
Uh no. Whole numbers do not include negatives.
2026-09-18 04:18:48
2
thestoryteller_official
The Storyteller :
a=3, b=2, c=4 calculated it mentally 😁
2026-09-17 12:05:35
2
three11three
:
whole numbers are all postive numbers, if negatives are included we call them integers 🥰🥰🥰
2026-09-18 12:30:48
1
appleuser97228353
Wallu :
What's the point?
2026-09-17 22:14:22
0
akopra1
Abrante3 Dynamite :
but -1 is not a whole number
2026-09-17 18:49:27
0
dr.maci
Maci Sordi :
Ab+c-(a+bc)=-1 -> a(b-1)+c(1-b)=-1->(b-1)(a-c)=-1 therefore b-1=1 or b-1=-1, if b=2 a-c=-1 and a=c-1 therefore c=4 and a=3, if b=0 a=c+1, so a=11 and c=10
2026-09-17 08:36:43
1
thedoodledot
thedoodledot :
3,2,4… easy!
2026-09-18 00:14:34
2
jdarlsiqo8g
Felix :
Harvard? 🤔 (c-a)(b-1)=1 => (1,1) (-1,-1) 11-0-10 or 3-2-4
2026-09-17 17:22:48
4
zaimokoya
zaimokoya :
there's no Harvard entry exam
2026-09-17 13:00:41
2
xshadow432x
xShadow432x :
a=3, b=2, c=4 took me 10 sec
2026-09-17 16:11:17
2
burghanth
Anthony de Burgh :
I got it in a minute by guessing that b=0. Then a=11 and c=10.
2026-09-18 13:11:31
1
kevinmills9391
Kevin Mills9391 :
I don’t think I would have gotten into Harvard
2026-09-18 04:32:10
1
midnitesong1
🐉 Mark¹⁷ :
3x2+4=10 3+2x4=11
2026-09-17 20:21:04
1
_.r._.me._.b._
ME :
b=0 a=11 c=10
2026-09-18 06:13:17
1
rude4279
rude :
9 1 1
2026-09-17 12:40:22
1
edu.programa
Edu programa :
a,b,c = {(3,2,4) , (11,0,10)} 🤔 👍🏻
2026-09-17 12:38:50
1
dexter.csizmar
Dexter :
3,2,4
2026-09-18 22:56:15
0
blume_n.wulf
Blume'n Wulf :
a = 11 b = 0 c = 10
2026-09-18 08:28:25
0
abuahmed3165
Abuahmed :
1/2 * 2 = 1🤣
2026-09-18 06:05:35
0
avesta4792
Avesta4792 :
A=1 B=5 C=5
2026-09-18 21:16:03
0
user4147235267286
user4147235267286 :
а=3, в=2, с=4👍
2026-09-18 17:51:00
0
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