Question

Out of 8 given points, 3 are collinear. How many different straight lines can be drawn by joining any two points from those 8 points?

• A. $26$
• B. $28$
• C. $27$
• D. $25$

Answer 1

Answer: (A)

$26$

Required number of straight lines
${}^8{C}_2{-}^3{C}_2+1$
$=26$