Q. There are 6 letters and 3 post-boxes. The number of ways in which these letters can be posted, is
A) $6^{3}$
B) $3^{6}$
C) $\ ^{6}C_{3}$
D) $\ ^{6}P_{3}$
Explanation
(b)
$\because$ Each letter can be posted in 3 ways
$\therefore$ Total number of ways $= 3^{6}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.