find the number of rectangles in the adjoining figure(square is also a rectangle). the figure is a grid of 12x6 .

• figure is 12*6...
  so no: of horizontal lines:6+1=7
  no: of vertical lines :12+1=13
  hence, no: of rectangles= 13c2*7c2
  = 1,638...ans
  
• 12 years agoHelpfull: Yes(71) No(0)
• if m= no.of rows
  n= no.of coloumns
  
  then formula for no.of rectangles is =(M x N x M+1 x N+ 1) /4
  
  so for this que,the ans is 12x6x13x7/4 =1638
• 12 years agoHelpfull: Yes(26) No(1)
• solution is simple. just remember a formula.ie m(m+1)/2 x n(n+1)/2
  u can take m as 12 and n as 6 or viceversa.ans is 1638.
• 12 years agoHelpfull: Yes(17) No(0)
• sigma(12)*sigma(6)
  [12(13)/2]*[6(7)/2]
  78*21=1638(ans)
• 12 years agoHelpfull: Yes(5) No(0)
• 13c2*7c2
  = 1,638...ans
  
• 12 years agoHelpfull: Yes(4) No(0)
• if m= no.of rows
  n= no.of coloumns
  
  then formula for no.of rectangles is =(M x N x M+1 x N+ 1) /4
  
  so for this que,the ans is 12x6x13x7/4 =1638
• 11 years agoHelpfull: Yes(4) No(0)
• 990
  12c2*6c2
• 12 years agoHelpfull: Yes(1) No(8)
• The formula is ((x^2+x)(y^2+y)/4) where x=12 and y=6 ...
• 12 years agoHelpfull: Yes(0) No(3)
• thanks....
• 12 years agoHelpfull: Yes(0) No(2)
• 12c2 * 6c2 ans is 990
• 12 years agoHelpfull: Yes(0) No(9)