WB JEE 2011 | Probability Question 8 | Mathematics

WB JEE 2011

MCQ (Single Correct Answer)

-0.25

A coin is tossed again and again. If tail appears on first three tosses, then the chance that head appears on fourth toss is

$${1 \over {16}}$$

$${1 \over {2}}$$

$${1 \over {8}}$$

$${1 \over {4}}$$

WB JEE 2012

MCQ (Single Correct Answer)

-0.33

Two decks of playing cards are well shuffled and 26 cards are randomly distributed to a player. Then, the probability that the player gets all distinct cards is

$${}^{52}{C_{26}}$$ / $${}^{104}{C_{26}}$$

2 $$\times$$ $${}^{52}{C_{26}}$$ / $${}^{104}{C_{26}}$$

2¹³ $$\times$$ $${}^{52}{C_{26}}$$ / $${}^{104}{C_{26}}$$

2²⁶ $$\times$$ $${}^{52}{C_{26}}$$ / $${}^{104}{C_{26}}$$

WB JEE 2025

MCQ (Single Correct Answer)

-0.25

If $E$ and $F$ are two independent events with $P(E)=0.3$ and $P(E \cup F)=0.5$, then $P(E / F)-P(F / E)$ equals

$\frac{2}{7}$

$\frac{3}{35}$

$\frac{1}{70}$

$\frac{1}{7}$

WB JEE 2025

MCQ (Single Correct Answer)

-0.5

The probability that a non-leap year selected at random will have 53 Sundays or 53 Saturdays is

$\frac{1}{7}$

$\frac{2}{7}$

$1$

$\frac{2}{365}$

PREVIOUS NEXT

WB JEE Subjects