1
KCET 2026
MCQ (Single Correct Answer)
+1
-0
The angle between the lines whose direction ratios are $a, b, c$ and $b - c, c - a, a - b$ is
A
$90^\circ$
B
$60^\circ$
C
$30^\circ$
D
$0^\circ$
2
KCET 2026
MCQ (Single Correct Answer)
+1
-0
In Linear Programming Problem (LPP), the objective function $Z = ax + by$ has the same maximum value at two corner points. The number of points at which $Z_{max}$ occurs is
A
$1$
B
$2$
C
$0$
D
Infinity
3
KCET 2026
MCQ (Single Correct Answer)
+1
-0
The corner points of the feasible region determined by the system of linear constraints are $(0, 10), (5, 5), (15, 15), (0, 20)$. Let $z = px + qy$ where $p, q > 0$. The relation between $p$ and $q$, so that the maximum $z$ occurs at both points $(15, 15)$ and $(0, 20)$ is
A
$p = q$
B
$p = 2q$
C
$q = 2p$
D
$q = 3p$
4
KCET 2026
MCQ (Single Correct Answer)
+1
-0
Recent studies suggest that $12\%$ of the world population is left handed. Depending on parents' hand usage, the chances of having left handed children are as follows:
A: Both parents are left handed, chances of having left handed children $= 24\%$
B: Both parents are right handed, chances of having left handed children $= 9\%$
C: Father left handed and mother right handed, chances of having left handed children $= 17\%$
D: Father right handed and mother left handed, chances of having left handed children $= 22\%$
Given $P(A) = P(B) = P(C) = P(D) = 1/4$ and L denotes child is left handed. What is the probability that $P(A \mid L)$?
A
$\dfrac{17}{100}$
B
$\dfrac{19}{25}$
C
$\dfrac{1}{3}$
D
$\dfrac{2}{3}$