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Railways PYQCBT 1 2016

RRB NTPC · Question 57

Find out the LCM of 3^5, 3^11, 3^ - 11 and 3^14 _____ A. 3^5 B. 3^11 C. 3^-11 D. 3^14

  1. D

  2. A

  3. B

  4. C

Show answer & explanation

Answer: (A) D

Explanation

For powers of the same base, the LCM is the highest power, which every other power divides. Of 3⁵, 3¹¹, 3⁻¹¹ and 3¹⁴, the highest is 3¹⁴.