A straight line segment is 36 cm long. Points
are to be marked on the line from both the
end points. From each end, the first point is at
a distance of 1cm from the end, the second
point is at a distance of 2 cm from the first
point and the third point is at a distance of
3 cm from the second point and so on. If the
points on the ends are not counted and the
common points are counted as one, what is
the number of points ?
(a) 10
(b) 12
(c) 14
(d) 16

• taking from one end, we get 7 points after eliminating two end points. Now, calculating from other end we get 5 points after eliminating two end points and two common points so, 7+5=12
• 10 years agoHelpfull: Yes(3) No(1)
• there are total 14 points including 2 end points
  also 2 common points are there
  so number of points=14-2-2=10 points
• 9 years agoHelpfull: Yes(1) No(1)
• 6;
  points 1-1cm; 2-3cm; 3-6cm; 4-10cm; 5-15cm; 6-21cm; 7-28cm; 8-36cm
  if points @ ends are not counted then 8-2 = 6
  
• 10 years agoHelpfull: Yes(0) No(1)
• the point will be at distance of 1,3,6,10,15,21. and this will bw from both side so total no of point is 14.
  
  ._._ _._ _ _._ _ _ _._ _ _ _ _ ._ _ _ _ _ _. _ _ _ _ _ _ _._ _ _ _ _ _ _ _. this is from left to right ,total 7 point not counting the end points,like wise from right to left also 7 points. so total 17 points.
• 10 years agoHelpfull: Yes(0) No(1)
• 14(points are 1,2,3,7,4,6,5,5,6,4,7,3,2,1)
• 8 years agoHelpfull: Yes(0) No(0)
• since it is in format of 1 3 6 10 15 21 28 36 and in back 36 35 33 30 26 21 15 8 0 there are common numbers 36 21 15 . less 3*2+1=7 dots from total 17 v, we get 10.
• 6 years agoHelpfull: Yes(0) No(0)