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If n distinct planes intersect in a line and another line I intersects one of these planes in a single point. what is least number of theses n planes that I could intersect ?
OPTIONS - (1)n (2)n-1 (3)n-2 (4)n/2 (5)n-3

Read Solution (Total 7)

is it n-1?
12 years agoHelpfull: Yes(9) No(1)

@arjit- can you tell me how? my guess is n/2.
12 years agoHelpfull: Yes(3) No(0)
ans is n-1,,,coz line could be parallel to 1 plane
12 years agoHelpfull: Yes(2) No(1)
why n-1??
12 years agoHelpfull: Yes(1) No(0)
in question asked for least not atmost ..... so plz explain approach ??
12 years agoHelpfull: Yes(1) No(0)
its n/2. here imagination is everything.
12 years agoHelpfull: Yes(1) No(1)
https://www.youtube.com/watch?v=8zaO0ik22ZQ
3 years agoHelpfull: Yes(0) No(0)

TCS Other Question

two cars left simultaneously from two places p & Q for Q & p respectively.they crossed each other after x hrs.after dat 1 of d car took y hrs & another took z hrs to reach their destinations.which of d following holds true?
x=(y+z)/2
x=2yz/(y+z)
x=SQRT(yz)
x=(y^2+z^2)/(y+z) for a real no. x,int(x) denotes integer part of x.int(x) is the largest integer less than or equal to x.int(1,2)=1,int(-2,4)=-3. so the value of int(1/2)+int(1/2+100)+int(1/2+2/100)+....+int(1/2+99/100)=