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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
Read Solution (Total 6)
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- 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
- 10 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
- 10 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 - 9 years agoHelpfull: Yes(0) No(0)
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