Daily Math · 2026-06-07

Question 1

In $	riangle ABC$, $a = 5$, $b = 6$, $c = 7$. The inradius $r$ is closest to:

Accepted Answer

$1.6$

Answer

$1.4$

Answer

$2.4$

Answer

$3.0$

Question 2

In the expansion of $\!\left(\sqrt{x} + \dfrac{1}{x}\right)^{6}$, the rational (i.e. integer-power-of-$x$) terms count is:

Accepted Answer

$3$

Answer

$1$

Answer

$2$

Answer

$4$

Question 3

By Rolle, the equation $x^4 - 6x^2 + 8 = 0$ has how many distinct real solutions?

Accepted Answer

$4$

Answer

$0$

Answer

$1$

Answer

$2$