Question
A die is thrown, find the probability of getting:a prime number
✓
Answer
A die has six numbers: $1,2,3,4,5,6$
$\therefore$ Number of possible outcomes $=6$
a prime number
Numbers of favourable outcomes $=$ a prime
number $=1,3,5$ which are $3$ in numbers
$P(E)=\frac{\text { Number of favourable outcomes }}{\text { Number of all possible outcomes }}$
$=\frac{3}{6}=\frac{1}{2}$
$\therefore$ Number of possible outcomes $=6$
a prime number
Numbers of favourable outcomes $=$ a prime
number $=1,3,5$ which are $3$ in numbers
$P(E)=\frac{\text { Number of favourable outcomes }}{\text { Number of all possible outcomes }}$
$=\frac{3}{6}=\frac{1}{2}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
→
$98+4A=CB3$
→The radius of a circular wheel is $42 \ cm$. Find the distance travelled by it in $:(i) 1$ revolution ;$(ii)\ 50$ revolutions ;$(iii) \ 200$ revolutions.
→simplify and express as positive indice: $\left(a^{-2} b\right)^{-2} \cdot(a b)^{-3}$
→A boy buys an old bicycle for $₹\ 162$ and spends $₹\ 18$ on its repairs before selling the bicycles for $₹$ $207.$ Find his gain or loss percent.
→If a polyhedron has $10$ vertices and $7$ faces, find the number of edges in it.
→Find the product : $(a+b c)(a-b c)\left(a^2+b^2 c^2\right)$
→Solve the following equation: $\frac{x+2}{9}=\frac{x+4}{11}$
→If $c > a$; show that $cba – abc = 99(c – a).$
→Find the quotient :
$\frac{-12}{7} \div(-16)$
→$\frac{-12}{7} \div(-16)$