Elitmus
Exam
Numerical Ability
Probability
Ram has two dies which has a nos 2,3,4,6 when he throws the two dies together find the no of possibility so that the some of the two dies should be even...???
Read Solution (Total 7)
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- total possible combinations=(2,2)(2,4)(2,6)(4,2)(4,4)(4,6)(3,3)(6,2)(6,4)(6,6)=10
so probability=10/16=5/8
- 9 years agoHelpfull: Yes(14) No(0)
- total outcome will be 16, and to get even number it should be a combination of (2,2)(2,4)(2,6). and so on
counting to 10
therefore 10/16=5/8 - 9 years agoHelpfull: Yes(1) No(0)
- First can have 4 outcomes
Second can also have 4 outcomes
So total combination should be 4×4=16.
Now, even+even=even and odd+odd=even
So 3 even numbers . Outcome of even number one on dice is 3. Same in the second one
So total possible outcome is 3×3=9
Now last digit i.e odd is 3. As combination of 3 can be with 3 only... as odd+odd=even
So finally 9+1=10 is total number of outcome for even.
So it would be 10/16 or 5/8 (possible outcome/total outcome). - 9 years agoHelpfull: Yes(1) No(0)
- n(e)=(2,2)(2,4)(2,6)(4,2)(4,4)(4,6)(3,3)(6,2)(6,4)(6,6)=10 ,p(e)=16
probability=n(e)/P(e)=10/16=5/8 - 9 years agoHelpfull: Yes(1) No(0)
- We know ,
even+even=even or odd +odd =odd
so out of given numbers(2,3,4,6)...there are only 3 even numbers ..so possibility of getting even number when two dies are thrown is [(2,4) ,(2,6),(4,2) ,(4,6) ,(6,4),(6,2)].....
....so total no of ways to get even number is 6.
and total nof of possible outcome is 4*4=16
so probability of this event is =6/16 i.e 3/8
i hope this answer is helpful - 9 years agoHelpfull: Yes(1) No(5)
- 5/8 will be the answer apart from the confusion that what no's does the other two #faces posses....
- 9 years agoHelpfull: Yes(1) No(0)
- answer will be 11/18
bcoz one cube may also show the number, whether other cube may not show any number when rolled - 9 years agoHelpfull: Yes(0) No(0)
Elitmus Other Question
1,2,3,4,5,6,7 are arranged such that sum of two successive numbers is a prime number....ex-1234765(i.e. 1+2=3, 2+3=5, 3+4=7....)
Q1-how many such possible combinations occur?
Q-2-How many possible combination occurs if first number is 1/7 and last number is 7/1(i.e 1xxxxx7 or 7xxxxx1)?
Q-3-How many numbers will come on 4th position(xxx_xxx)?
There are 3 bags, in 1st there are 9 Mangoes, in 2nd 8 apples & in 3rd 6 bananas. There are how many ways you can buy one fruit if all the mangoes are identical, all the apples are identical, & also all the Bananas are identical?
Options:
a)648
b)432
c)23
d) 2 to the power(23)-1