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#1 Re: Dark Discussions at Cafe Infinity » Even and Math » 2011-04-21 18:01:08

Even and odd both are the back bone of mathmatics because due to the distribution of numbers in even and odd in mathmatics then the calculations becomes more easy and simple. Many difficult puzzles in maths are automatically resolved.

#2 Re: Puzzles and Games » What's 27 times 37 ? » 2011-04-20 01:02:46

Start with any two-digit number. Multiply each digit by itself then add these answers. Do the same thing to this new number and so on until something happens. For example 32 becomes 9+4 which is 13, 13 becomes 1+9 which is 10, 10 becomes 1+0 =1. This one ends at 1. What else happens when you start with different numbers?

#3 Re: Puzzles and Games » help please » 2011-04-20 00:59:40

Decimal numbers such as 3.762 are used in situations which call for more precision than whole numbers provide. As with whole numbers, a digit in a decimal number has a value which depends on the place of the digit. The places to the left of the decimal point are ones, tens, hundreds, and so on, just as with whole numbers.

#4 Re: Puzzles and Games » sum » 2011-04-19 22:41:46

Caushy Root Law is applicable on this question. And it can also be solved by applying the limits on it. The answer of the Question is 3.

#5 Re: Computer Math » Solving vector problems with geogebra » 2011-04-19 00:56:58

The "number" is correct for your solution to part one of the first problem, but I don't like what you have written.

The resultant vector is

    (120 + 200COS52, 200SIN52)= (243.132, 157.602)

The magnitude of this vector is

    Sqrt(243.1322 +157.6022) = 289.744

The angle measurement of BAC is 52 degrees and the vector AD is the resultant vactor. The angle you want is BAD and you know the lengths of the sides of the triangle BAD so you can find the angle you need using the Law of Coaines.

#6 Re: Dark Discussions at Cafe Infinity » Why 2 substances can feel » 2011-04-19 00:36:04

Basically I turned 18 last week, have been drinking with a few late nights especially last night so I'm pretty sleep deprived and have developed a bit of a cold. But I also have a white substance on most of and 2 lumps on the back of my tongue, which are not painful, I can feel them. Also my gums seem a wee bit more inflamed than usual, although my oral health isn't always impeccable.

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