TCS Company Logical Reasoning General Mental Ability

Anoop managed to draw seven circles of equal radii with their centers on the diagonal of a square such that two extreme circles touch two sides of the square & each middle circle touches two circles on the either side.Find the ratio of the circles to the sides of the square.
a)1:(2+7sqrt(2))
b)1:(2+6sqrt(2))
c)(2+7sqrt(2)):1
d)1:(4+7sqrt(3))

Read Solution (Total 4)

according to question length of diagonal of square=5*2a+a+a+2asqrt(2)=2a(6+sqrt(2)).
where a is radius of circle.
diagonal=side*sqrt(2)
2a(6+sqrt(2)=side*sqrt(2)
that means side:a=1:(2+6*sqrt*(2)).
hence ans is b.
14 years agoHelpfull: Yes(5) No(1)

ans is B option...it is just formula....
14 years agoHelpfull: Yes(1) No(0)
ans:b
14 years agoHelpfull: Yes(0) No(1)
pls... explain
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TCS Other Question

Alok and Bhanu play the following min-max game. Given the expression
N = 12 + X*(Y - Z)
where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu would like to minimize it. Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X, Y or Z). Alok then chooses the next value and Bhanu, the variable to substitute the value. Finally Alok proposes the value for the remaining variable. Assuming both play to their optimal strategies, the value of N at the end of the game would be
1) 93
2 30
3) 12
4) -69
In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of flight increased by 30 minutes. The duration of the flight is:
option
(a) 1 hour
(b) 2 hours
(c) 3 hours
(d) 4 hours