Answer:
Step-by-step explanation:
Let the number is n.
ATQ,
The quotient of a number and two means n/2
Something is increased means plus.
It means,
The required expression is : . Hence, this is the required solution.
Answer:
P(9,7) = 181440
Step-by-step explanation:
The roles are distinct so order matters. So we must use the permutation formula.
P(n,r)=n!/(n−r)!
P(9,7) = 9! / 2! = 9*8*7*6*5*4*3 = 181440
Answer:a) 57120 ways
b) 4080
c= nothing
Step-by-step explanation:
Total number of qualified candidates= 17
Total number of officers to be appointed =4
Number of different ways using permutation = 17C4=57120
b) Total number of qualified candidates =17
Total number of planning officers=3
Number of different ways using permutation = 17C3=4080 ways
C) Probability P(getting 3 youngest of the qualified candidates)= nothing
