HP NW280-200X User Manual page 299

Combination
Permutation
Random
Number
Integer
Normal
Seed
Functions and commands
5! returns
120
The number of combinations (without regard to order) of n
things taken r at a time.
COMB(n,r)
Example: Suppose you want to know how many ways five
things can be combined two at a time.
returns
COMB(5,2)
Number of permutations (with regard to order) of n things
taken r at a time.
PERM (n,r)
Example: Suppose you want to know how many permutations
there are for five things taken two at a time.
PERM(5,2)returns
Random number. With no argument, this function returns a
random number between zero and one. With one integer
argument a, it returns a random number between 0 and a.
With three integer arguments, n, a, and b, returns n random
number between a and b.
RANDOM
RANDOM(a)
RANDOM(n,a,b)
Random integer. With one integer argument a, it returns a
random integer between 0 and a. With three integer
arguments, n, a, and b, returns n random integers between a
and b.
RANDINT(a)
RANDINT(n,a,b)
Random real number with normal distribution N(,).
 
RANDNORM( ,
Sets the seed value on which RAND() operates. By specifying
the same seed value on two or more calculators, you ensure
that the same random numbers appear on each calculator
when RAND() is executed.
RANDSEED(value)
10.
20.
)
293