A and B are two prime numbers such that

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

HCF and LCM

Question:

A and B are two prime numbers such that A > B and their LCM is 209. The value of A² - B is :

Options:

350

372

361

339

Correct Answer:

350

Explanation:

LCM of A and B = 209

Prime factors of 209 = 11 × 19

So, A = 19 and B = 11 [∵ A > B]

Then, A² - B = 19² - 11 = 361 - 11 = 350