Each of the letters in the table above represents one of the numbers 1 to 9 inclusive and each of the numbers occurs exactly once. What is the value of i?
(1) i is the product of the prime numbers d and e
(2) i is the sum of two even numbers d and f
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(1) i is the product of the prime numbers d and e
The prime numbers ranging from 1 to 9 inclusive are 2, 3, 5, 7
Knowing that the number can not exceed 9, which is the largest value among the given numbers.
We have:
2*3=6
2*5=10
2*7=14
3*5=15
3*7=21
5*7=35
In this case, there is only 2*3=6 satisfies the assumption stated in the question.
--> Sufficient.
(2) i is the sum of two even numbers d and f
The even numbers in this range are: 2, 4, 6, 8
The sums can be as followed:
2+4= 6
2+6= 8
2+8= 10
4+6= 10
4+8= 12
6+8= 14
There are 2 numbers in which satisfy the stated assumption: (2+4= 6 & 2+6= 8). It can be either one of the cases.
--> INSUFFICIENT
Answer choice: (A)