2 boys and 2 girls are in Room X, and 1 boy and 3 girls in Room Y. Specify the sample space for the experiment in which a room is selected and then a person.
Let us denote 2 boys and 2 girls in room X as B1, B2 and G1, G2 respectively. Let us denote 1 boy and 3 girls in room Y as B3, and G3, G4, G5 respectively.
Accordingly, the required sample space is given by
S = {XB1, XB2, XG1, XG2, YB3, YG3, YG4, YG5}
1) A committee consisting of 3 girls and 4 boys can be formed in 1C3×9C4 ways
⇒4C1×9C4
⇒4/1×9×8×7×6/1.2.3.4
⇒504 ways
2) Since, the committee requires 7 members and it must have at least 3 girls means the committee...
We can see any object, when light reflected by that object reaches our eyes. But in the dark room, no light is reflected by the object so we are unable...
Let the no. of girls be 5x
No. of boys=7x
According to the question
5x+8=7x
7x-5x=8
2x=8
x=8/2
x=4
No. of girls=5*4=20
no. of boys=7*4 or 5*4+8=28
Hence the total strength of the class is 20+28=48
Sameer's action was voluntary because rushing out of the room was under his conscious control. The smoke and smell were perceived by the receptors in the sense organs and signals...
False, because the outcomes are not actually, likely. For no girl, the outcome is bbb, for one girl, it is bgb, gbb, bbg, for two girls, it is bgg, ggb, gbg and...
List of toys and games that boys play with: cars, guns, swords, buses, railway trains, lions, etc. (toys), cricket, kabaddi, hockey, football etc. (games). List of toys and games that...