ITC
Exam
Numerical Ability
Probability
Q. Two diced are tossed the probability that the total score is a prime number?
Read Solution (Total 9)
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- possible outcomes for prime number = 2,3,5,7,11
so for 2=(1,1)= only 1 possible combination
for 3= (2,1) (1,2) = 2 combinations
for 5= (2,3) (3,2)(4,1) (1,4) = 4 combinations
for 7= (6,1) (1,6) (2,5) (5,2) (3,4) (4,3) = 6 combinations
for 11= (6,1),(1,6) = 2 combinations
total = 15
possible total outcomes = 6 x 6 = 36
so probability of getting a toatal of prime number = 15/36
=5/12 ans - 12 years agoHelpfull: Yes(20) No(2)
- sample space 36
events 15
15/36
===5/12
- 12 years agoHelpfull: Yes(8) No(2)
- probability of prime numbers is: 16/36.
prime numbers 2,3,5,7,11.
possibilities are (1,1),(1,1),(2,1),(1,2),(2,3),(3,2),(3,4),(4,3),(2,5),(5,2),(6,1),(1,6),(4,1),(1,4),(5,6),(6,5).
the answer is = 16/36 - 11 years agoHelpfull: Yes(1) No(9)
- 5/12
prime numbr in 2,3,5,7,11 and and thr combination in two dice then i get 5/12 - 11 years agoHelpfull: Yes(0) No(0)
- answer is 5/12
- 9 years agoHelpfull: Yes(0) No(0)
- sum shoul be prime
so, prob.= 15/36 - 9 years agoHelpfull: Yes(0) No(0)
- ans- 5/12
the sets producing prime nos. are
1,1 1,2 1,4 1,6
2,1 2,3 2,5
3,2 3,4
4,1 4,3
5,2 5,6
6,1 6,5
these are 15 sets.
total no. of sets = 6 X 6 =36
prob. = 15/36 = 5/12 - 8 years agoHelpfull: Yes(0) No(0)
- 3/6*3/6=1/4
- 7 years agoHelpfull: Yes(0) No(0)
- (1,1) (1,2) (1,6) (2,3) (2,1) (2,5) (3,2) (4,3) (3,4) (5,2) (6,1)
11/36 - 5 years agoHelpfull: Yes(0) No(0)
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