2015-II-42
Ans: A
… Read Let $R(h,k)$ be the orthocentre of $\Delta OPQ$. Note
HKDSE-MATH - 2015
2015-II-43
Ans: C
The required number
… Read The required number
$\begin{array}{cl}
= & P^6
2015-II-44
Ans: D
The required probability
… Read The required probability
$\begin{array}{cl}
=
2015-II-45
Ans: B
I must be true. Since $x_1 = a_{50}$, then for the first
… Read I must be true. Since $x_1 = a_{50}$, then for the first