Id d is a positive integer, is √d an integer
1.d is a square of an integer
2.√d is the square of an integer
The correct answer is D
I understand how statement 2 is sufficient, But how is statement 1 sufficient
if d = 2^2 = 4 then √4 = integer
but
if d = 1^2 = 1 then √1 is not an integer
so statement 1 is not sufficient
Can someone please clarify this
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St1 says d is square of an integer. where you have considered d = 1*2, that is incorrect as 2 is not a square of any integer. root2 is not an integer.
if you consider D to be integer sqaures like 1,4,9,16,25 .... you will always find that rootD is an integer (1,2,3,4,5 ... ) for the above case
Hence 1 is sufficient also.
if you consider D to be integer sqaures like 1,4,9,16,25 .... you will always find that rootD is an integer (1,2,3,4,5 ... ) for the above case
Hence 1 is sufficient also.
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Take a break. I think you are over-stressing.sanaa.rizwan wrote:if d = 1^2 = 1 then √1 is not an integer
√1 = 1 is an integer.
Statement 1: If d is a square of an integer, square root of d must be an integer.sanaa.rizwan wrote:If d is a positive integer, is √d an integer
1. d is a square of an integer
2. √d is the square of an integer
Sufficient
Statement 2: Square of an integer is always an integer.
So, √d is an integer.
Sufficient
The correct answer is D.
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Id d is a positive integer, is √d an integer
1.d is a square of an integer
2.√d is the square of an integer
The correct answer is D
I understand how statement 2 is sufficient, But how is statement 1 sufficient
if d = 2^2 = 4 then √4 = integer
but
if d = 1^2 = 1 then √1 is not an integer
so statement 1 is not sufficient
We are given d is a positive integer and asked to find out if root d is an integer.
1)For your questions : root 1 is 1 which is an integer. Hence A is sufficient.
1.d is a square of an integer
2.√d is the square of an integer
The correct answer is D
I understand how statement 2 is sufficient, But how is statement 1 sufficient
if d = 2^2 = 4 then √4 = integer
but
if d = 1^2 = 1 then √1 is not an integer
so statement 1 is not sufficient
We are given d is a positive integer and asked to find out if root d is an integer.
1)For your questions : root 1 is 1 which is an integer. Hence A is sufficient.