PracticeMedium
Q.The number of 7-digit numbers that can be formed using digits 1–9 (repetition not allowed) such that the digit 5 is in the middle is
a
9 × 8!
b
8 × 8!
c
P(9,6) × 6!
d
P(8,6)
Correct Answer: Option D
The correct solution involves applying the fundamental concept to derive the final value step by step...