1
JEE Main 2018 (Online) 15th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
A player X has a biased coin whose probability of showing heads is p and a player Y has a fair coin. They start playing a game with their own coins and play alternately. The player who throws a head first is a winner. If X starts the game, and the probability of winning the game by both the players is equal, then the value of 'p' is :
A
$${1 \over 5}$$
B
$${1 \over 3}$$
C
$${2 \over 5}$$
D
$${1 \over 4}$$
2
JEE Main 2018 (Online) 15th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A plane bisects the line segment joining the points (1, 2, 3) and ($$-$$ 3, 4, 5) at rigt angles. Then this plane also passes through the point :
A
($$-$$ 3, 2, 1)
B
(3, 2, 1)
C
($$-$$ 1, 2, 3)
D
(1, 2, $$-$$ 3)
3
JEE Main 2018 (Online) 15th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
If the position vectors of the vertices A, B and C of a $$\Delta$$ ABC are respectively $$4\widehat i + 7\widehat j + 8\widehat k,$$    $$2\widehat i + 3\widehat j + 4\widehat k,$$ and $$2\widehat i + 5\widehat j + 7\widehat k,$$ then the position vectors of the point, where the bisector of $$\angle$$A meets BC is :
A
$${1 \over 2}\left( {4\widehat i + 8\widehat j + 11\widehat k} \right)$$
B
$${1 \over 3}\left( {6\widehat i + 11\widehat j + 15\widehat k} \right)$$
C
$${1 \over 3}\left( {6\widehat i + 13\widehat j + 18\widehat k} \right)$$
D
$${1 \over 4}\left( {8\widehat i + 14\widehat j + 19\widehat k} \right)$$
4
JEE Main 2018 (Online) 15th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
If the mean of the data : 7, 8, 9, 7, 8, 7, $$\lambda$$, 8 is 8, then the variance of this data is :
A
$${7 \over 8}$$
B
1
C
$${9 \over 8}$$
D
2
EXAM MAP
Joint Entrance Examination
JEE MainJEE AdvancedWB JEEBITSATMHT CET
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
© ExamGOAL 2023