Permutations and Combinations 1 Question 1
1. The number of four-digit numbers strictly greater than 4321 that can be formed using the digits
(2019 Main, 8 April II)
(a) 306
(b) 310
(c) 360
(d) 288
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Answer:
Correct Answer: 1. (b)
Solution:
- Following are the cases in which the 4-digit numbers strictly greater than 4321 can be formed using digits 0 ,
Case-I
Case-IV
So, required total numbers
