If # denotes one of two arithmetic operations, addition or multiplicatio, and if k is an integer, what is the value of 3 # k?
1) 2 # k =3
2) 1 # 0 = k
OA is A.
I answered E.
Please explain your reasoning.
One of Two Arithmetic Operations
This topic has expert replies
With the stem, we know k is an integer.
From statement 1, 2#k=3 we can deduce that # is addition and k can take the value of 1 only.
From the second statement, we cannot say what the sign is or what the value of k can be. Not Sufficient.
So the answer is A.
From statement 1, 2#k=3 we can deduce that # is addition and k can take the value of 1 only.
From the second statement, we cannot say what the sign is or what the value of k can be. Not Sufficient.
So the answer is A.
- ezhilkumarank
- Moderator
- Posts: 92
- Joined: Sat Feb 21, 2009 1:20 am
- Thanked: 5 times
- Followed by:1 members
The option in the DS question is sufficient only if it yields a single value for the unknown.skalevar wrote:If # denotes one of two arithmetic operations, addition or multiplicatio, and if k is an integer, what is the value of 3 # k?
1) 2 # k =3
2) 1 # 0 = k
OA is A.
I answered E.
Please explain your reasoning.
With Statement one: K could have only one value to satisfy the given equation. That is k could be only 1 and the operation could be only addition with the given constraints in the question.
With Statement two: K could be either 1 with # being addition or 0 when # is multiplication. Hence the original question 3#k could have two values. Hence this statement is not sufficient.
"The will-to-do achieves the deed, when the mind that wills is strong indeed"
-
- Master | Next Rank: 500 Posts
- Posts: 268
- Joined: Wed Mar 17, 2010 2:32 am
- Thanked: 17 times
I think you forgot to consider that K is an integer and hence, for stmt. I: k can not be 3/2.skalevar wrote:If # denotes one of two arithmetic operations, addition or multiplicatio, and if k is an integer, what is the value of 3 # k?
1) 2 # k =3
2) 1 # 0 = k
OA is A.
I answered E.
Please explain your reasoning.
My Blog:
https://www.iwantutopia.blocked/
https://www.iwantutopia.blocked/