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Exam Questions Papers - Engineering
Q1: Given digits 2, 2, 3, 3, 3, 4, 4, 4, 4 how many distinct 4 digit numbers greater than 3000 can be formed?A 50
B 51
C 52
D 54
ANS:B - 51
The given digits are 2, 2, 3, 3, 3, 4, 4, 4, 4 we have to find the numbers that are greater than 300
∴ The first digit can be 3 or 4 but not 2.
Now, let us fix the first, second and third digits as 3, 2, 2, then the fourth place can be filled in 3 ways.
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