GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 19 Oct 2019, 02:58

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# If a is a member of Set A and b is a member of Set B, what is the leas

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 58452
If a is a member of Set A and b is a member of Set B, what is the leas  [#permalink]

### Show Tags

19 Feb 2019, 21:54
00:00

Difficulty:

25% (medium)

Question Stats:

71% (00:52) correct 29% (01:03) wrong based on 34 sessions

### HideShow timer Statistics

Set A = {−1, 0, 1}
Set B = {−2, −1, 0, 1}

If a is a member of Set A and b is a member of Set B, what is the least possible value of a − b^2 ?

A. 2
B. 0
C. −2
D. −5
E. −9

_________________
GMAT Club Legend
Joined: 18 Aug 2017
Posts: 5020
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
Re: If a is a member of Set A and b is a member of Set B, what is the leas  [#permalink]

### Show Tags

20 Feb 2019, 00:25
Bunuel wrote:
Set A = {−1, 0, 1}
Set B = {−2, −1, 0, 1}

If a is a member of Set A and b is a member of Set B, what is the least possible value of a − b^2 ?

A. 2
B. 0
C. −2
D. −5
E. −9

taking a as -1 and b as -2
a-b^2 = -5 IMO D
VP
Joined: 31 Oct 2013
Posts: 1465
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Re: If a is a member of Set A and b is a member of Set B, what is the leas  [#permalink]

### Show Tags

20 Feb 2019, 15:33
Bunuel wrote:
Set A = {−1, 0, 1}
Set B = {−2, −1, 0, 1}

If a is a member of Set A and b is a member of Set B, what is the least possible value of a − b^2 ?

A. 2
B. 0
C. −2
D. −5
E. −9

least value of $$a -b^2$$.

*** scanning the answer choices it's clear that we have to try to get a negative result.

$$b^2$$ yields positive value all the time. take the greatest value as there is a negative sign before $$b^2$$.

a = -1

b = -2 .

$$a - b^2$$ = $$-1 - (-2)^2$$ = -1 - 4 = -5.

Re: If a is a member of Set A and b is a member of Set B, what is the leas   [#permalink] 20 Feb 2019, 15:33
Display posts from previous: Sort by