TCS Company General Ability General Knowledge

A circular dartboard of radius 1 foot is at a distance of 20 feet from you. You throw a dart at it and it
hits the dartboard at some point Q in the circle. What is the probability that Q is closer to the center of the circle than the periphery?
a) 0.75 b) 1 c) 0.5 d) 0.25

Read Solution (Total 4)

0.25.
Total area of board = Pi*1^2= Pi
preferred are =Pi (1/2)^2= Pi/4

so prob = (pi/4)/pi =1/4= 0.25
13 years agoHelpfull: Yes(43) No(4)

i dont understand mr.dipin

will u plz explain it detaily
13 years agoHelpfull: Yes(13) No(1)
answer=0.25
10 years agoHelpfull: Yes(0) No(1)
pi*1^2=pi
=>pi(1/2)^2=pi/4
=>(pi/4)/pi=1/4=0.25
ans:0.25
5 years agoHelpfull: Yes(0) No(1)

TCS Other Question

There are two boxes, one containing 10 red balls and the other containing 10 green balls. You are allowed to move the balls between the boxes so that when you choose a box at random and a ball at random from the chosen box, the probability of getting a red ball is maximized. This maximum probability is
a)1/2 b)14/19 c)37/38 d)3/4 A sheet of paper has statements numbered from 1 to 40. For all values of n from 1 to 40, statement n says: 'Exactly n of the statements on this sheet are false.' Which statements are true and which are false?

a) The even numbered statements are true and the odd numbered statements are false.
b) The odd numbered statements are true and the even numbered statements are false.
c) All the statements are false.
d) The 39th statement is true and the rest are false.