Elitmus
Exam
Numerical Ability
Age Problem
what is the probability of always having x+y>0 ,where y<0
a)1/2
b)1/8
c)3/4
d)1/4
Read Solution (Total 8)
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- its d) 1/4
total value of X can be : 1. X < 0 ; 2. X = 0 ; 3. X > 0 but less than Y in magnitude 4. X > 0 as well as |Y|
so probability of having X + Y > 0 wud be 1/4
- 9 years agoHelpfull: Yes(12) No(4)
- x+(-y)>0=>x>y 50% chance 1/2
- 9 years agoHelpfull: Yes(5) No(1)
- 1/2 100% true
- 9 years agoHelpfull: Yes(4) No(2)
- here we have options for x being as..x>0 0r x=0 and there are no other options for x .thus reqd. probability = 1/2.
- 9 years agoHelpfull: Yes(2) No(2)
- how pritesh bhakat?
- 9 years agoHelpfull: Yes(1) No(0)
- b. becuse x+y>0 and y
- 9 years agoHelpfull: Yes(0) No(1)
- x can be - 1). x = y
2). x > y
3). x < y
4). x = 0
so x + y > 0 only if x > y
hence, answer is 1/4 :-) - 9 years agoHelpfull: Yes(0) No(2)
- 1/4 because x must be greater y and x must be greater than 0 . x>y and x >0 because suppose x is -1 and y is -2 then sum will be -3 which is less than 0
so x>y and x>0. 1/2 * 1/2 = 1/4 ans.
- 8 years agoHelpfull: Yes(0) No(0)
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