Six ordinary dice are rolled. The probability that at least half of them will show at least 3 isA. `41xx(2^(4))/(3^(6))`B. `(2^(4))/(3^(6))`C. `20xx(2^(4))/(3^(6))`D. none of these

Six ordinary dice are rolled. The probability that at least half of th

1.	Six ordinary dice are rolled. The probability that at least half of them will show at least 3 isA. `41xx(2^(4))/(3^(6))`B. `(2^(4))/(3^(6))`C. `20xx(2^(4))/(3^(6))`D. none of these
Answer» Correct Answer - A

Five coins are tossed simultaneously. The probability that at least on head turning up, isA. `(1)/(32)`B. `(5)/(32)`C. `(7)/(16)`D. `(31)/(32)`
If the chance of a gushot hitting a target is 0.2 then the probability that at least 2 shots out of 10 will hit the target isA. `1-((4)/(5))^(10)`B. `1-7((4)/(5))^(10)`C. `1+(7)/(2) ((4)/(5))^(10)`D. none of these
IF ` X to B ( n= 20,p=0.03) and (0.97)^(20) = 0.5437` then : `P ( X ge 1)=`A. `0.5463`B. `0.6453`C. `0.4563`D. none of these
IF ` X to B (n=20,p= 0.1)` then :P `(X ge 1)=..`A. `(0.1)^(20)`B. `1-(0.1)^(20)`C. `1-(0.9)^(20)`D. `(0.9)^(20)`
IF ` X to B (n=9 ,p =0.8)`, ` then :P (X ge 6) =( 4^(7))/(5^(9))(k) ` where k=A. 109B. 110C. 111D. 112
If `X to B ( n= 10,p=0.5) ` then : `p(X ge 9)=`…A. `(10)/(1024)`B. `(1)/(1024)`C. `(11)/(1024)`D. none of these
Workers in an industry have a 10% chance of sufering from an occupational disease ,Probability that , out of 6 workers , at least 5 will catch the discease isA. `(11)/(2,00,000)`B. `(11)/( 2,000)`C. `(11) /( 200)`D. none of these
If a coin is tossed 6 times , then probability of getting 4 or more haeads isA. `(10)/(32)`B. `(11)/(32)`C. `(12)/(32)`D. `(13)/(32)`
A coin is tossed 5 times. What is the probability of getting at least 3 heads.A. `(11)/(16)`B. `(15)/(16)`C. `(13)/(16)`D. none of these
If `X and Y` are independent binomial vatiates `B(5,1/2) and B(7,1/2)` and the value of `P(X+Y=3)` isA. `(55)/(1024)`B. `(55)/(4098)`C. `(55)/(2048)`D. `(55)/(128)`