Latest TCS Aptitude Question SOLUTION: if a line is having 10 dots in one line and second line having 8 dots if both the lines do not intersect ,find the possible no of triangles

• Placement Papers
• /
• TCS

TCS Question Papers: TCS Interview Experience(90) TCS Company Profile

(#M40030111) TCS question number Keep an EYE

if a line is having 10 dots in one line and second line having 8 dots if both the lines do not intersect ,find the possible no of triangles

Asked In TCS PRIYA NAMDEO (10 years ago)

Unsolved Read Solution (11)

Is this Puzzle helpful?   (3)   (0) Submit Your Solution

Read Solution (11) :

Ritu  (10 years ago)

since we need to find all the possible combinations, the total no. of triangles with 2 vertices from 10-dots line and 1 from 8-dot line = 10C2*8C1
Similarly, the total no. of triangles with 2 vertices from 8-dots line and 1 from 10-dot line=8C2*10C1
total no. of triangles = (10C2*8C1)+(8C2*10C1)

Is this solution Helpfull? Yes (21) | No   

bhushan patne  (10 years ago)

10c2*8c1+8c2*10c1

Is this solution Helpfull? Yes (9) | No   

sagar  (10 years ago)

10c2*8c1+8c2*10c1=388

Is this solution Helpfull? Yes (2) | No (2)  

manish kumar sharma  (10 years ago)

10c2 * 8c1 +8c2 * 10c1
=45*8+28*10
=360+280= 640

Is this solution Helpfull? Yes (2) | No   

n.bikash choudhury  (10 years ago)

to creat triangle we reqire 3 dots...so, here we take 2 dots from 10 dots and 1 dots from 8 dots or 2 dots from 8 dots and 1 dots from 10 to creat triangle..dn the posssible no. of triangle is 10C2*8C1+8C2*10C1

Is this solution Helpfull? Yes (1) | No   

megha borkar  (10 years ago)

total points (10+8=18)
as we have to make triangle we require three points always..
so 10c3
now on onse line there are 10 points but this point can be co-linear so we have to subtract it and similar with the other line

so
18c3-10c3-8c3=816-120-56=640 ans..

Is this solution Helpfull? Yes (1) | No   

Hanu Gupta  (10 years ago)

10P2*8P1+8P2*10P1

Is this solution Helpfull? Yes | No   

neha jain  (10 years ago)

18c2-10c2-8c2=80

Is this solution Helpfull? Yes | No (1)  

ritesh dewangan  (10 years ago)

if 2 lines donot intersect so there will not be any possibility to make a triangle ...

Is this solution Helpfull? Yes | No (1)  

ritesh dewangan  (10 years ago)

sorry its my mistake....
ans will be (10c1*8c2)+(10c2*8c1)

Is this solution Helpfull? Yes | No   

NITESH DAS  (10 years ago)

18c3-8c3-10c3

Is this solution Helpfull? Yes | No   

Please Login to Read Solution.