2. If a and b are primes greater than 2 then none of the following cannot be true except which?
A. a + b is even
B. ab is odd
C. a2 + b2 is even
D. b – a is odd
23. Which of the following must not be an integer if x is an integer and 4/x + 5/x + 6/x is a whole number?
A. x/3
B. 30/x
C. 45/x + x/3
D. 7/x
E. x/7
37. An odd times an odd minus an even all divided by an even cannot be
A. a fraction
B. even
C. odd
D. rational
E. none of the above
43. Assuming that the statement, “If the sun is blue then the moon is green” is true then all of the following couldn’t be true except?
A. The sun and moon are blue.
B. The moon is red and the sun is blue.
C. The moon is blue and the sun is green.
D. If the moon is green then the sun is blue.
2. If a and b are primes greater than 2 then none of the following cannot be true except which?
A. a + b is even
B. ab is odd
C. a2 + b2 is even
D. b – a is odd
23. Which of the following must not be an integer if x is an integer and 4/x + 5/x + 6/x is a whole number?
A. x/3
B. 30/x
C. 45/x + x/3
D. 7/x
E. x/7
37. An odd times an odd minus an even all divided by an even cannot be
A. a fraction
B. even
C. odd
D. rational
E. none of the above
43. Assuming that the statement, “If the sun is blue then the moon is green” is true then all of the following couldn’t be true except?
A. The sun and moon are blue.
B. The moon is red and the sun is blue.
C. The moon is blue and the sun is green.
D. If the moon is green then the sun is blue.
Download the review sheet: 1on1 Triple-Negative, Oddly Even, Prime Brain Twisters