What is the units digit of the number z?
(1) 17 < z < 20
(2) 18 < z < 21
OA E
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What is the units digit of the number z?
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BTGmoderatorDC
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Manasa3190
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E
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What is the units digit of the number z?
(1) 17 < z < 20
Since, it is not given that z is an integer possible combinations = (7,8,9)
Not sufficient
(2) 18 < z < 21
Since, it is not given that z is an integer possible combinations = (0,8,9)
Not sufficient
a and b together
Possible combinations are (8,9)
Not sufficient
(1) 17 < z < 20
Since, it is not given that z is an integer possible combinations = (7,8,9)
Not sufficient
(2) 18 < z < 21
Since, it is not given that z is an integer possible combinations = (0,8,9)
Not sufficient
a and b together
Possible combinations are (8,9)
Not sufficient
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GMATGuruNY
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Your Answer
A
B
C
D
E
Global Stats
The usage of number implies that we should consider NON-INTEGER values.BTGmoderatorDC wrote:What is the units digit of the number z?
(1) 17 < z < 20
(2) 18 < z < 21
Both statements are satisfied by z=18.1 and z=19.1
Since the units digit of z can be different values, the two statements combinecd are INSUFFICIENT.
The correct answer is E.
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Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at [email protected].
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