defence exam Indian Navy Chargeman/Draughtsman Mock Test 2023 Quantitative Aptitude Number System LCM and HCF

What is the HCF of 3²⁹ - 9 and 3³⁸ - 9 ?

1

3⁹ - 1

2

3¹¹- 1

3

3¹¹- 3

4

3¹¹ - 9

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