1
GATE CE 2011
+2
-0.6
There are two containers with one containing $$4$$ red and $$3$$ green balls and the other containing $$3$$ blue balls and $$4$$ green balls. One ball is drawn at random from each container. The probability that one of the balls is red and the other is blue will be ___________.
A
$${1 \over 7}$$
B
$${9 \over 49}$$
C
$${12 \over 49}$$
D
$${3 \over 7}$$
2
GATE CE 2009
+2
-0.6
The standard normal probability function can be approximated as $$F\left( {{X_N}} \right) = {1 \over {1 + \exp \left( { - 1.7255{X_N}{{\left| {{X_N}} \right|}^{0.12}}} \right)}}\,\,\,$$\$
$$\,{X_N} =$$ standard normal deviate. If mean and standard deviation of annual precipitation are $$102$$ cm and $$27$$ cm respectively, the probability that the annual precipitation will be $$b/w$$ $$90$$ cm and $$102$$ cm is
A
$$66.7$$%
B
$$50.0$$%
C
$$33.3$$%
D
$$16.7$$%
3
GATE CE 2004
+2
-0.6
A hydraulic structure has four gates which operate independently. The probability of failure of each gate is $$0.2.$$ Given that gate $$1$$ has failed, the probability that both gates $$2$$ and $$3$$ will fail is
A
$$0.240$$
B
$$0.200$$
C
$$0.040$$
D
$$0.008$$
GATE CE Subjects
Construction Material and Management
Geomatics Engineering Or Surveying
Engineering Mechanics
Transportation Engineering
Strength of Materials Or Solid Mechanics
Reinforced Cement Concrete
Steel Structures
Irrigation
Environmental Engineering
Engineering Mathematics
Structural Analysis
Geotechnical Engineering
Fluid Mechanics and Hydraulic Machines
General Aptitude
EXAM MAP
Joint Entrance Examination