Some equations have been solved on the basis of a certain system. Find the correct answer for the unsolved equation on that basis.
If 9 * 7 = 32, 13 * 7 = 120, 17 * 9 = 208, then 19 * 11 = ?
(a) 150 (b) 180
(c) 210 (d) 240

• Ans is 240(d)... 9*7-> (9+7)*(9-7)== 32
  13*7-> (13+7)*(13-7)== 120
  17*9-> (17+9)*(17-9)== 208
  19*11-> (19+11)*(19-11)==240
• 10 years agoHelpfull: Yes(2) No(0)
• 240
  19*11..(19+11)*(19-11)= 30*8=240
• 10 years agoHelpfull: Yes(1) No(2)
• 9*7-> (9+7)*(9-7)== 32
  13*7-> (13+7)*(13-7)== 120
  17*9-> (17+9)*(17-9)== 208
  19*11-> (19+11)*(19-11)==240
  
• 9 years agoHelpfull: Yes(0) No(0)
• sum of 9 &7=16
  and teir diff =2
  and result be their product=16*2=32
  similarly 30*8=240
  
• 9 years agoHelpfull: Yes(0) No(0)
• Answer is 240
• 9 years agoHelpfull: Yes(0) No(0)
• ans:- 240
  logic behind this question is (i) 9+7=16, 9-7=2 , 16*2=32
  (ii) 13+7=20, 13-7=6, 20*6=120
  (iii) 17+9=26, 17-9=8, 26*8=208 so the ans will be 19+11=30,19-11=8, 30*8=240
• 8 years agoHelpfull: Yes(0) No(0)