SSC Government Jobs Exams Numerical Ability Probability

There are two urns, one containing two white balls and four black balls, the other containing three white balls and nine black balls. One ball each is drawn out of the two urns. What is the probability of getting two balls of the same color?

Read Solution (Total 3)

7/12
probability of getting two balls of the same color = (2/6)*(3/12)+(4/6)*(9/12)= 7/12
10 years agoHelpfull: Yes(9) No(0)

one white from 1st urn=1
then prob of getting 9 black balls=9
finally getting one white=1.....1+9+1=11
10 years agoHelpfull: Yes(1) No(0)
19.3 percentege
10 years agoHelpfull: Yes(0) No(4)

SSC Other Question

Choose the option that correctly sequence of the follwing sentence
1."he certaily talk about himself as a teamplayer-i dont personally see any evidence
of that "buchanan told a news conference on friday
2.pieersen has been Englands most consistent batsman during the disastrous ashes deference but has been called aloof and critised for exposing tailenders to the strike at the end of innings
3.the australian coach said he noticed pietersen always fielded in the outfield away from his team mates and that he was one of five players who did not attend the squads christamas day launch
4.australia coach john buchanan has launched a striking attack on englands kevin pietersen claiming the south african born batsman is not a teamplayer
Option
a) 2341
b) 3241
c) 1423
d) 4231

Q. Writer : Pen : : ?

(1) Needle : Tailor
(2) Artist : Brush
(3) Painter : Canvas
(4) Teacher : Class