book Maths Puzzle Numerical Ability

if a plane contains 20 points no three of which are collinear how many different triangles can be formed using these points

Read Solution (Total 0)

book Other Question

could oyu give me the help and answers to finding the associative and commuuntative propety 125+347+75... 58+16+2+4...2(25+8)+2(15-8)... 6(40-21)-6(20-1) Please help me solve this equation: 3x + 2(5x-7)