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Home  |  Posts Tagged: numbers and operations

Tag: numbers and operations

Diditwinkles

Which of the following must be negative whenever x>y>0?

Posted: June 4, 2015

Which of the following must be negative whenever x>y>0?

A) x^2 -4xy + y^2
B) x^2 -2xy – y^2
C) x^2 – xy -2y^2
D) y^2 -x^2 -xy
E) y^2 -x^2 +xy

permalink | Categorized: Q and A | Tagged: algebra, numbers and operations
Diditwinkles

For an real number k, which of the following must be a real number?

Posted: June 3, 2015

For an real number k, which of the following must be a real number?

A)1/k
B)k/k+1
C)1/k-1
D) k/k^2+1
E) 1/k^2-1

Thank you

permalink | Categorized: Q and A | Tagged: numbers and operations
Diditwinkles

Which of the following statements is true for all real numbers c?

Posted: May 17, 2015

Which of the following statements is true for all real numbers c?
A) 8+c > 4+c
B) 8+ 4c > 4-4c
C) 4c > 8c
D) 8c > 4c
E) 8c^2 > 4c^2

permalink | Categorized: Q and A | Tagged: numbers and operations
Diditwinkles

If the sum of five integers is an even integer, what is the greatest number of these integers that can be odd?

Posted: May 16, 2015

If the sum of five integers is an even integer, what is the greatest number of these integers that can be odd?
A) Zero
B) One
C) Two
D) Four
E) Five

permalink | Categorized: Q and A | Tagged: numbers and operations
Mike McClenathan

Are you a smooth operator? Prove it with this Numbers and Operations quiz.

Posted: May 29, 2014

How’s everyone else doing on this quiz?  

permalink | Categorized: Math | Tagged: counting, even and odd, listing, numbers and operations, prime factorization, ratios

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