A bag contains twenty Rs 5 coins, fifty Rs 2 coins and thirty Re 1 coins. If it is equally likely that one of the coins will fall down when the bag is turned upside down, what is the probability that the coin: (i) will be a Re 1 coin? (ii) will not be a Rs 2 coin? (iii) will neither be a Rs 5 coin nor be a Re 1 coin? - Noon Academy

A bag contains twenty Rs 5 coins, fifty Rs 2 coins and thirty Re 1 coins. If it is equally likely that one of the coins will fall down when the bag is turned upside down, what is the probability that the coin: (i) will be a Re 1 coin? (ii) will not be a Rs 2 coin? (iii) will neither be a Rs 5 coin nor be a Re 1 coin?

CBSE | Class 10 | Exercise 25C | Maths | Probability | Selina

A bag contains twenty Rs 5 coins, fifty Rs 2 coins and thirty Re 1 coins. If it is equally likely that one of the coins will fall down when the bag is turned upside down, what is the probability that the coin: (i) will be a Re 1 coin? (ii) will not be a Rs 2 coin? (iii) will neither be a Rs 5 coin nor be a Re 1 coin?

(iii) Number of favourable outcomes for neither Re 1 nor Rs 5 coins = Number of favourable outcomes for Rs 2 coins = 50 = n(E)

Hence, probability (neither Re 1 nor Rs 5 coin) = n(E)/ n(S) = 50/100 = 1/2

i

More Material

Write chromyl chloride test with equation

What do you understand by lanthanide contraction

What are lanthanide elements?

Explain oxidization properties of potassium permanganate in acidic medium.

In any reaction, catalyst
(A) retards the rate of reaction
(B) increases the rate of reaction
(C) both increases and decreases the rate of reaction
(D) none of these

Solve the following linear programming problem graphically: Maximise $\mathrm{Z}=4 \mathrm{x}+\mathrm{y} \ldots(1)$ subject to the constraints: $\mathrm{x}+\mathrm{y} \leq 50 \ldots(2)$
$\begin{array}{l} 3 \mathrm{x}+\mathrm{y} \leq 90 \ldots(3) \\ \mathrm{x} \geq 0, \mathrm{y} \geq 0 \ldots(4) \end{array}$

$\text { The binomial distribution whose mean is } 9 \text { and the variance is } 2.25 \text { is }$

$\int_{1}^{\alpha} \log (1+\tan x) d x$ is squal to

If $y=3 e^{2 x}+2 e^{3 x}$ . prove that $\frac{d^{2} y}{d x^{2}}-5 \frac{d y}{d x}+6 y=0$

If $f: R \rightarrow R$ defined by $f(x)=x$ , if $x>2 ; f(x)=5 x-2$ if $x \leq 2$ then $f$ is

$\text { If }\left(\tan ^{-1} x\right)^{2}+\left(\cot ^{-1} x\right)^{2}=\frac{5 \pi^{2}}{8}, \text { then } x \text { equals to }$

If $A_{3 \times 3}$ and $\operatorname{det} A=6$ , then $\operatorname{det}(2 \operatorname{adj} A):$

← Previous Next →