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23 May 2020, 08:22
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A
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Difficulty:
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79% (01:37) correct
21%
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wrong
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If a, b, c, and d denote positive integers in the figure above, what is the value of the product abcd ?
(1) In each of columns S and T, the product of the three numbers equals the product of the four numbers in row R.
(2) a + b + c + d = 26
DS20356
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1.png [ 2.64 KiB | Viewed 9198 times ]
yashikaaggarwal
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23 May 2020, 08:30
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Answer should be A
Statement 1: In each of columns S and T, the product of the three numbers equals the product of the four numbers in row R.
1)Column S=>2*3*4*5= a*3*c
=> A*C = 2*4*5=> 40
2)Column T=>2*3*4*5= b*4*d
=> B*D = 2*3*5=> 30
A*C*B*D= 40*30= 1200
(Sufficient)
Statement 2: A+B+C+D=26
But we don't know whether they are distinguished similar all positive or negative. (Not sufficient)
Posted from my mobile device
Statement 1: In each of columns S and T, the product of the three numbers equals the product of the four numbers in row R.
1)Column S=>2*3*4*5= a*3*c
=> A*C = 2*4*5=> 40
2)Column T=>2*3*4*5= b*4*d
=> B*D = 2*3*5=> 30
A*C*B*D= 40*30= 1200
(Sufficient)
Statement 2: A+B+C+D=26
But we don't know whether they are distinguished similar all positive or negative. (Not sufficient)
Posted from my mobile device
23 May 2020, 08:42
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From statement 1
a×c=40
5×8=40
4×10=40
2×20=40
b×d=30
6×5=30
3×10=30
2×15=30
Insufficient
Second statement is insufficient
Combining
a=5 b=8 c=3 d=10
abcd product is unique
Sufficient
Answer is C
Posted from my mobile device
a×c=40
5×8=40
4×10=40
2×20=40
b×d=30
6×5=30
3×10=30
2×15=30
Insufficient
Second statement is insufficient
Combining
a=5 b=8 c=3 d=10
abcd product is unique
Sufficient
Answer is C
Posted from my mobile device
