
How to answer every Even Odd, Primes, and LCM-GCD Questions.
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Topics Covered
- 1Pitfalls in Even Odd Questions – Introduction
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1Pitfall 1 – Explanation, official examples, and Practice Questions
- 2Pitfall 2 – Explanation, official examples, and Practice Questions
- 3Pitfall 3 – Explanation, official examples, and Practice Questions
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- 2Pitfalls in Primes
- 1Pitfall 1 – Explanation, official examples, and Practice Questions
- 2Pitfall 2 – Explanation, official examples, and Practice Questions
- 3Pitfall 3 – Explanation, official examples, and Practice Questions
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- 3Pitfalls in LCM-GCD
- 1Pitfall 1 – Explanation, official examples, and Practice Questions
- 2Pitfall 2 – Explanation, official examples, and Practice Questions
- 3Pitfall 3 – Explanation, official examples, and Practice Questions
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Reader Reviews

Artem
GMAT 740 Scorer
I now understand who I can avoid so many mistakes by just following the systematic approach outlined by you.

Cristina
GMAT 730 Scorer
I now understand how I can use Prime factorization to break down complex expressions and solve the seemingly difficult DS questions.