The number of integers greater than 6,000 that can be formed, using the digits 3, 5, 6, 7 and 8, without repetition, is :
← JEE Main 2015 · 4 Apr · Shift 1
MathematicsSingle correct+4 / -1Question 66 of 90
JEE Main 2015 · 4 Apr · Shift 1, Mathematics question 66
Answer and worked solution
Official answer: B
- All 5-digit numbers: .
- 4-digit numbers above 6000 must start with 6, 7 or 8: .
Total 192.
Topics:Permutations