Permutation and CombinationHard
Question
How many numbers can be formed with the digits 3, 4, 5, 6, 7 which are greater than 1000 (Rept. not allowed) ?
Options
A.240
B.120
C.24
D.5
More Permutation and Combination Questions
A man has 7 relatives, of which 4 are ladies and 3 gents, his wife has also 7 relatives, of which 3 ladies and 4 gents. ...In a class tournament every student has to play a game with one another. If 2 students fell ill after playing 3 games ea...The number of ways in which first, second and third prize can be distributed among 5 competitors is (no person can get m...For what value of r, nPr = 720 and nCr = 120 ?...The number of integral solutions of x + y + z = 0 with x ≥ − 5, y − 5, z ≥ − 5 is -...