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13 Oct 2018, 10:09
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
45% (01:31) correct
55%
(01:18)
wrong
based on 225
sessions
History
Date
Time
Result
Not Attempted Yet
Which of the following must be true?
A. A Linear equation in one variable always gives a unique value of x.
B. A Quadratic equation in one variable always gives two unique value of x.
C. \((EVEN)^N\) is always EVEN, where N is an integer
D. \((ODD)^N\) can never be EVEN, where N is an integer
E. |x| is always positive.
A. A Linear equation in one variable always gives a unique value of x.
B. A Quadratic equation in one variable always gives two unique value of x.
C. \((EVEN)^N\) is always EVEN, where N is an integer
D. \((ODD)^N\) can never be EVEN, where N is an integer
E. |x| is always positive.
13 Oct 2018, 10:15
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In my opinion (D) should be correct. Please see attached solution.
Best Regards,
GLadi
Best Regards,
GLadi
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Q4_3.jpeg [ 132.15 KiB | Viewed 4632 times ]
13 Oct 2018, 10:30
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Which of the following must be true?
A) A Linear equation in one variable always gives a unique value of x.
B) A Quadratic equation in one variable always gives two unique value of x.
C) (EVEN)N(EVEN)N is always EVEN, Where N is an integer
D)(ODD)N(ODD)N can never be EVEN, Where N is an integer
E) |x| is always Positive.
D&E should be right
A) A Linear equation in one variable always gives a unique value of x.
B) A Quadratic equation in one variable always gives two unique value of x.
C) (EVEN)N(EVEN)N is always EVEN, Where N is an integer
D)(ODD)N(ODD)N can never be EVEN, Where N is an integer
E) |x| is always Positive.
D&E should be right
13 Oct 2018, 10:37
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OA : D
A) A Linear equation in one variable always gives a unique value of x. ==> Can have no solution some times
B) A Quadratic equation in one variable always gives two unique value of x.==> can have x as same values as ==> X^2 -4 = 0 , where x have { 2,2 } values
C) Even ^N is always EVEN, Where N is an integer ==> when n is Zero ==False
D) Odd ^ N is can never be EVEN, Where N is an integer ==> True for all values of N as Odd * Odd is always ODD , True for N = 0 as well , as 3^0 = 1 which is ODD
E) |x| is always Positive ===> false for x = 0
A) A Linear equation in one variable always gives a unique value of x. ==> Can have no solution some times
B) A Quadratic equation in one variable always gives two unique value of x.==> can have x as same values as ==> X^2 -4 = 0 , where x have { 2,2 } values
C) Even ^N is always EVEN, Where N is an integer ==> when n is Zero ==False
D) Odd ^ N is can never be EVEN, Where N is an integer ==> True for all values of N as Odd * Odd is always ODD , True for N = 0 as well , as 3^0 = 1 which is ODD
E) |x| is always Positive ===> false for x = 0
