if X^2<81 and Y^2<25, what is the largest prime number that can be equal to X-2Y?
A. 3
B. 7
C 11
D 13
E 17
please help
A. 3
B. 7
C 11
D 13
E 17
please help
BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course
RedeemTarget Test Prep · GMAT
Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

with Chris Peckover, 100th-Percentile GMAT Scorer
Self-paced EA prep. Study on your schedule.

with Logan Thompson
Complete access from day one. Study on your schedule.
Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.
i missed that part while answering the question...Birottam Dutta wrote:You have to understand that the trick here is to notice that x and y need not be positive or integers and then proceed. The answer comes easily then!
New here Create free account