Okie , mấy bữa nì ngộ bận wá xá wà xa , không dzô tt.net
Bi chừ cho bài dễ nì :
1. Proof :
1 < 2
Multiply the equation by log (0.5)
1 * log(0.5) < 2 * log(0.5)
Make the log factors exponents
log(0.5 ^ 1) < log(0.5 ^ 2)
Carry out the exponentiation
log(0.5) < log(0.25)
Raise 10 to the power of each side of the inequality
10^(log(0.5)) < 10^(log(0.25))
By definition of logarithms, 10^log(a) = a, so...
0.5 < 0.25
Then just multiply both sides by 4
2 < 1
Question:
What is wrong ? dòm bài HaiTac nha
2. Take this equation:
11  1111 = 11
Now move 1 line to make it true. Quaivat
3. A fly and a flea are trapped in a flue
said the fly to the flea 'to flee is some number times 3'
Said the flea to the fly 'but 3 squared is too high'
responds the fly 'but it'll also do to have some number times 2'
'Agreed' said the flea 'Then so it shall be'
So now it is up to you.
How far must the fly and the flea fly to flee the flue TayDoi  6
4. Okie , tiếp theo nì
There is only one 2digit number that is both a square and a cube. What is it? Umbalabien_ozawachan :64 ( 8*8 or 4 x 4 x 4 )
5. There is only one 3digit number that is both a square and a cube. What is it? 729  umbalabienozawachan
6. Which 3digit number, made of consecutive digits, is 2 less than a cube and 2 more than a square? 123 , umbalabienozawachan
7. What 2digit number is 1 more than a square and 1 less than a cube? 26  umbalabien ozawachan
8. Find three numbers, all under 500, where the sum of all three is a perfect square and the sums of any two of them are also perfect squares ?
9. Solve
QUART + QUART + QUART + QUART = GALLON TayDoi
37524 + 37524 + 37524 + 37524 = 150096
10. Can you take the numbers 23, 23, 23, and 23 and make the total equal 24 using basic arithmatic signs ( +,  , X , / ) . Each number may only be used once, and every number must be used. umbalabien_ozawachan ((23*23)+23)/23=(529+23)/23=552/23=24
11. Find A,B,C,D,E,F,G,H,I,J, if :
ABC/3=JE 219/3 = 73
DEF/6=JE 438/6 = 73
GHJ/9=JE 657/9 = 73 TayDoi
12. Is zero even or odd? Even  KVT
Okie , Dzồi đó , làm đi nhen . Bửa mô ngộ rãnh ngộ dzô chấm bài nhen , ráng đi hỉ !
Last edited by nguoidethuong on Jun 01, 2007  01:39 PM, edited 12 times in total.
