7 equidistant horizontal lines intersect 12 euidistant vertcallines to form a gridthe smallest rectangles are squares how many squares

11*6+10*5+9*4+8*3+7*2+6*1=196
11 years agoHelpfull: Yes(13) No(5)
7C2*12C2 =1386
11 years agoHelpfull: Yes(10) No(3)
for every 2line there a new rectangle is generated so we will take the combinations....
7c2*12c2=1386
11 years agoHelpfull: Yes(3) No(2)
(11*7)+ (10*6)+ (9*5) + 8*4 + 7*3 + 6*2 + 7*1 = 260
11 years agoHelpfull: Yes(1) No(6)
divyakar awasthi is ryt
11 years agoHelpfull: Yes(1) No(2)
it is 196....u r ri8 bhanu...
11 years agoHelpfull: Yes(1) No(3)
ans is 280...
11 years agoHelpfull: Yes(1) No(2)
280
size vertical plane horizontal plane no of sqaures
1X1 12 7 12*7
2X2 11 6 11*6

likewise,we get
12*7 + 11*6 + 10*5 + 9*4 + 8*3 + 7*2 + 6*1=280
11 years agoHelpfull: Yes(1) No(1)
thnx buddy @ swarup
11 years agoHelpfull: Yes(1) No(0)
(m*n)+(m-1)*(n-1)+(m-2)*(n-2)+........upto mul become 0;

12*7+11*6+10*5+9*4+8*3+7*2+6*1=280
11 years agoHelpfull: Yes(1) No(0)
[n(n+1)(2n+3t+1)/6] for (n*n+t)
hence. 196
11 years agoHelpfull: Yes(0) No(2)

7 equidistant horizontal lines intersect 12 euidistant vertcallines to form a gridthe smallest rectangles are squares ...how many squares???