edited by
356 views

Please log in or register to answer this question.

Related questions

2 votes
2 votes
1 answer
1
go_editor asked Mar 31, 2016
1,815 views
Let $x, y$ be two positive numbers such that $x + y =1.$ Then, the minimum value of $\left(x+ \frac{1}{x} \right)^2 + \left(y + \frac{1}{y}\right)^2$ is$12$$20$$12.5$$13....
0 votes
0 votes
1 answer
2
go_editor asked Mar 31, 2016
674 views
If $a, b, c$ and $d$ are four positive real numbers such that $abcd = 1,$ what is the minimum value of $(1 + a)(1 + b)(1 + c)(1 + d)?$$4$$1$$16$$18$
0 votes
0 votes
1 answer
3
go_editor asked Mar 31, 2016
500 views
$m$ is the smallest positive integer such that for any integer $n m,$ the quantity $n^3 – 7n^2 + 11n – 5$ is positive. What is the value of $m?$$4$$5$$8$None of thes...
0 votes
0 votes
1 answer
4
go_editor asked Mar 31, 2016
960 views
Let $x, y$ and $z$ be distinct integers, $x$ and $y$ are odd and positive, and $z$ is even and positive. Which one of the following statements cannot be true?$(x − z)^2...