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Re: Maths Tricks, Questions And Brain Teasers by ImperialMcHael(m): 3:34pm On Feb 17, 2012 |
jedisco:True! But I'm also right with "If I were here 10mins ago, which way would you say is the right way?" |
Re: Maths Tricks, Questions And Brain Teasers by Nobody: 3:55pm On Feb 17, 2012 |
No Qualms:Are you kidding!? WRONG!! |
Re: Maths Tricks, Questions And Brain Teasers by Ibomade1: 4:26pm On Feb 17, 2012 |
sauer: I discovered this about 15 years ago that 3 consecutive numbers are always divisible by 3 without leaving a remainder 123/3 = 41 789/3 = 263 To make it more interesting, if you take the[b] sum [/b]of 3 consecutive numbers it will also be divisible by 3 without leaving a remainder 1+2+3 /3 = 2 7+8+9/3 = 8 Try it out |
Re: Maths Tricks, Questions And Brain Teasers by ektbear: 4:31pm On Feb 17, 2012 |
^- If you have 3 consecutive #s, then you are taking X, X+1, X+2, summing, and then dividing by 3. The answer will always be X+1. |
Re: Maths Tricks, Questions And Brain Teasers by moshoodn(m): 7:38pm On Feb 17, 2012 |
me coming with mine now. |
Re: Maths Tricks, Questions And Brain Teasers by Nobody: 7:46pm On Feb 17, 2012 |
Mr. Sauer, you haven't confirmed my answer yet, is the last child Omega? From earlier: Maggie Mathematical has five sons. One is called Alpha, another is called Beta, the third is called Gamma and the fourth is called Fred. What is the fifth son's name? Thanks all! |
Re: Maths Tricks, Questions And Brain Teasers by moshoodn(m): 8:35pm On Feb 17, 2012 |
Alice came across a lion and a unicorn in a forest of forgetfulness. Those two are strange beings. The lion lies every Monday, Tuesday and Wednesday and the other days he speaks the truth. The unicorn lies on Thursdays, Fridays and Saturdays, however the other days of the week he speaks the truth. Lion: Yesterday I was lying. Unicorn: So was I. On which day did they say that? |
Re: Maths Tricks, Questions And Brain Teasers by sparklebaby: 8:56pm On Feb 17, 2012 |
^^ it was on a thursday. |
Re: Maths Tricks, Questions And Brain Teasers by Nobody: 8:58pm On Feb 17, 2012 |
moshoodn: The lion can't remember the day he lied? |
Re: Maths Tricks, Questions And Brain Teasers by Nobody: 8:58pm On Feb 17, 2012 |
moshoodn: The lion can't remember the day he lied? |
Re: Maths Tricks, Questions And Brain Teasers by moshoodn(m): 9:11pm On Feb 17, 2012 |
D.pinaku:you can do better |
Re: Maths Tricks, Questions And Brain Teasers by Nobody: 9:26pm On Feb 17, 2012 |
A bottle is fully filled with oil and it weighs 1.5Kg. When it is half filled with the oil it weighs 900g. What is the weight of the bottle? |
Re: Maths Tricks, Questions And Brain Teasers by ImperialMcHael(m): 12:11am On Feb 18, 2012 |
moshoodn:It was a monday! Its uncertain if the unicorn can lie on sunday (as it is not a "day of the week" Any better luck? |
Re: Maths Tricks, Questions And Brain Teasers by somegirl1: 12:17am On Feb 18, 2012 |
sparkle-baby got it right, twas Thursday |
Re: Maths Tricks, Questions And Brain Teasers by dj5naira(m): 12:29am On Feb 18, 2012 |
What of English brain teasers? Why only Maths? |
Re: Maths Tricks, Questions And Brain Teasers by somegirl1: 12:49am On Feb 18, 2012 |
D.pinaku: let the bottle be a and oil be b a + b = 1.5kg a + b/2 = 0.9kg b = 1.2kg mass of bottle = 0.3kg mass shd do but since u asked for weight: weight of bottle = 0.3kg* 9.8 = 29.4N |
Re: Maths Tricks, Questions And Brain Teasers by RichyBlacK(m): 1:03am On Feb 18, 2012 |
No Qualms: Mass = Density * Volume So, if mass is constant, then density and volume have an inverse relationship, i.e., the lower the density, the higher the volume. Since powder has a lower density than iron, then powder has a higher volume, given mass equality. The form the iron takes (powder or not) may not be relevant, as long as the density of iron is fixed, which is a reasonable assumption. |
Re: Maths Tricks, Questions And Brain Teasers by Flashaldrin(m): 2:37am On Feb 18, 2012 |
yeeeeeee!!! our thread don reach front page! sauer you have me to thank sauer:i was letting the mediocres shine and you had to come challenge me abi, e be like say you want make i kill the thread again well from the equation 3^{x}+4^{x}=5^{x} therfore 3^{x} = 5^{x} - 4^{x} using the law of difference of two squares (which i hope you know) (5+4) (5-4) = 3^{x} 9=3^{x} 3^{2}=3^{x} x=3 |
Re: Maths Tricks, Questions And Brain Teasers by Flashaldrin(m): 2:39am On Feb 18, 2012 |
^^^^ sorry, x=2. made a typo mistake, and the modifying aint working. |
Re: Maths Tricks, Questions And Brain Teasers by Flashaldrin(m): 2:42am On Feb 18, 2012 |
jedisco:nice one! sauer learn from this |
Re: Maths Tricks, Questions And Brain Teasers by ImperialMcHael(m): 3:15am On Feb 18, 2012 |
Imperial McHæl:Waoh, I can't believe I'm as dumb as that! Thursday it is |
Re: Maths Tricks, Questions And Brain Teasers by Nobody: 5:39am On Feb 18, 2012 |
Flashaldrin: Flashaldrin:we need to check if you actually attended/attend any school? are you sure your school is not some ramshack along lagos-ibadan expressway? difference of two squares!? u gotta be kidding me! No, Mr. You can't use difference of two squares, because. . . .simply put, those aint two squares. Who's gonna back me up here!? |
Re: Maths Tricks, Questions And Brain Teasers by Nobody: 5:41am On Feb 18, 2012 |
simply put, those aint two squares. At least not before the answer becomes apparent |
Re: Maths Tricks, Questions And Brain Teasers by Nobody: 5:44am On Feb 18, 2012 |
ItsModella:Nah, nah, nah! It's not omega. Answer was actually provided earlier. It's a question which broke the back of many an attempter on here. Ask Flashboy and emofine! Answer is right there. . . .Thanksall. And that's justified. Not with the many "Thankgod", "Thanksheaven", "Goodluck" names we hear around Nigeria! |
Re: Maths Tricks, Questions And Brain Teasers by Nobody: 6:36am On Feb 18, 2012 |
some-girl: some-girl: |
Re: Maths Tricks, Questions And Brain Teasers by LordReed(m): 7:33am On Feb 18, 2012 |
You have 3 goats and 5 plots of grass for feeding the goats. How can you share the plots so that each goat has equal share when you can only split a plot and any subdivision by half? |
Re: Maths Tricks, Questions And Brain Teasers by madprof(m): 10:24am On Feb 18, 2012 |
sauer: Right, they're not squares, unless of course x=2. |
Re: Maths Tricks, Questions And Brain Teasers by Nobody: 10:52am On Feb 18, 2012 |
madprof:Good |
Re: Maths Tricks, Questions And Brain Teasers by Nobody: 10:54am On Feb 18, 2012 |
Lord_Reed:anything like 1 + (1/2) + (1/ + (1/32) + (1/128) + (1/512) + . . . . . . . until a subdivision is so small it is insignificant? the series sums to equal distribution of plots anywyz |
Re: Maths Tricks, Questions And Brain Teasers by somegirl1: 2:15pm On Feb 18, 2012 |
D.pinaku:Thanks |
Re: Maths Tricks, Questions And Brain Teasers by NoQualms1(f): 3:54pm On Feb 18, 2012 |
sauer: Mr Sauer, what is d correct answer? RichyBlacK: Do you mean 'since sand has a lower density than iron'? sauer:Lol, fear take style catch me when i saw that analysis. How did x become 2 suddenly? |
Re: Maths Tricks, Questions And Brain Teasers by LordReed(m): 5:07pm On Feb 18, 2012 |
@sauer You will not get to a point where the subdivision is insignificant. The answer is quite simple. Actually there multiple paths to the answer. |
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