A 10-digit number is said to be interesting if its digits are all distinct and it is a multiple of 11111. How many interesting integers are there? Thanks and...
A University professor and his wife has decided to throw a party and invited N guest and their spouses. On the night of the party, all guests turned up with...
... A University professor and his wife has decided to throw a party and invited N guests and their spouses. On the night of the party, all guests turned up...
... If this is a real maths puzzle - where there is only one answer - then the professor shook hands with only 1 person. If N = 1, there is the professor [P]...
... Oh, I overlooked the possibility of 2 - the professor may have done one of those double-handed shakes with A - so actually shook 2 hands, while only...
In a message dated 2005-02-01 10:25:09 AM Eastern Standard Time, Peter at ... Or in exact numbers: pound troy = 5760 grains pound avoirdupois = 7000 grains ...
So in that case, what pair of numbers in the list 2N,0; 2N-1,1; 2N-2,2; 2N-3,3; … ; N,N. is before N,N, or tp put it another way, 2N-N, N? I believe it is...
In a message dated 2005-02-02 9:39:03 AM Eastern Standard Time, "Peter Otzen" <pmaxotzen@...> writes: If this is a real maths puzzle - where there is...
This is called the HANDSHAKING LEMMA, which is usually discussed at Graph Theory courses. the answer is 2(N+1). A University professor and his wife has decided...
The answer in fact is 68. I was at a swingers party recently and I invited everyone leaving to put into a hat a piece of paper with the number of people they...
Such a number (call it N) must be a multiple of 9 based on the sum of digits: 0+1+...+9 = 45. Since 9 doesn't divide 11111, N must be a multiple of 9*11111 =...
I have a question...... [sqrt(a)]*[(sqrt(b)] = sqrt(ab) Is this statement true for all real values of a and b or does it only apply for positive values of a...
... Quick (and deliberately incomplete) answer: Unless you're prepared to deal with roots of non-real numbers (not just imaginary-valued roots of negative...
a and b can be any real number. the exception is that when u do sqrt(-1)= i. where i is called an imaginary number. so in ur question about sqrt(-1)*sqrt(-1)=...
... A similar dilemma can occur even with roots of positive numbers. By convention we take sqrt(a) to be the positive root of `a' although there are really two...
... Answer in line ... 2N- ... Yes. A more complete list of pairs : 2N,0; 2N-1,1; 2N-2,2; 2N-3,3; . . . ;N+2,N-2;N+1,N-1; N,N. ... I don't understand this. If...
... The widely-used convention is, as you say, to take sqrt(x) (for x>0) to be the unique positive real y such that y^2=x. But sqrt denotes a function (on the...
I think I must have missed something... What in your workings out disqualifies a number such as 1234657890 from being one of the 3,456 interesting numbers? ......
The square root of -1 doesn't exist, so basically you're playing with fire. The letter i has been used to denote this "imaginary number", which in turn has a...
plz i want u to help me with this indices,it has been giving me problem for so long: solve for x 1. 2^2x=8x 2. 3^x+4^x=5^x thanks for helping me out!...
for the first question: 2^(2x)=(2^2)^x=4^x thus ur equation would be: 4^x=8x. from observation u can see that x=2. i am not sure how to solve it though...
Hi! I'm June Yambao.Turning 4th year of Bachelor in Elementary Education in Saint Michael's College of Laguna, Philippines. I have something to ask and this...
Hi! I'm June Yambao.Turning 4th year of Bachelor in Elementary Education in Saint Michael's College of Laguna, Philippines. I have something to ask and this...
Hi! Good Day! I'm Vernadeth E. del Mundo, a college student taking up Education, major in Mathematics from Saint Michael's College of Laguna, Philippines. I...
Howdy June Try and make math applicable to the real world. If you're dealing with, say, adding and subtracting numbers, use the anaology of having and owing...
Octernions? Oh my sweet Saviour..... Never heard of them! Not about to investigate them, though; I barely know anything about quaternions to begin with....
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