Trigonometric EquationEasy
Question
The number of integers greater than 6000 that can be formed, using the digits 3,5,6,7 and 8 without repetition, is :
Options
A.120
B.72
C.216
D.192
Solution
Number of 4 digit numbers greater than 6000 is 3 × 4 × 3 × 2 = 72
Number of 5 digit numbers greater than 6000 is 5! = 120
So total number of numbers = 72 + 120 = 192
Number of 5 digit numbers greater than 6000 is 5! = 120
So total number of numbers = 72 + 120 = 192
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