Latest Elitmus Aptitude Question SOLUTION: Probability of Cristiano Ronaldo scoring a penalty is twice than the probability of missing it. In a World cup he takes 5 penalties, What is the probability of scoring 3 penalties

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(#M40154106) ELITMUS Numerical Ability question Probability Keep an EYE

Probability of Cristiano Ronaldo scoring a penalty is twice than the probability of missing it. In a World cup he takes 5 penalties, What is the probability of scoring 3 penalties among the 5?

Option:
a) 5*2*((2/3)^3 * (1/3)^3)
b) 1-((2/3)^3 * (1/3)^3)
c) 1-((2/3)^2)

Asked In Elitmus Satyaki Ghosh (8 years ago)

Unsolved Read Solution (4)

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Read Solution (4) :

Akshay  (8 years ago)

P+2P=1
now p=1/3;

so answer is 5c3*(2/3)^3(1/3)^2

Is this solution Helpfull? Yes (28) | No (1)  

Satyaki Ghosh  (8 years ago)

Sorry.....
Options are:
a) 5 *2 *((2/3)^3 * (1/3)^2)
b) 1-((2/3)^3 * (1/3)^2)
c) 1-((2/3)^2 * (1/3)^3)

Is this solution Helpfull? Yes (3) | No   

Dhwrwm Basumatary  (8 years ago)

P(s)=2/3, P(m)=1/3
The probability of scoring 3 = 5c3*(2/3)^3*(1/3)^2
=5*2*((2/3)^3*(1/3)^2)

Is this solution Helpfull? Yes (3) | No   

venugopal reddy  (8 years ago)

x+(x+1)+(x+2)+(x+3) == 4x+6 = y

y is multiple of 10 only when x's units place is either 1 or 6

1+2+3+4 and 6+7+8+9
--------------------
--------------------
991+992+993+994 and 996+997+998+999

as per the permutations formula

1digit , 2 digit , 3digit numbers are

= 2 + ( 9*2 ) + ( 9 *10 * 2 ) == 200

Is this solution Helpfull? Yes | No (3)  

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