odd

Returns true iff its argument is an odd number.

Syntax

• odd(n)

  • n is an integer

Description

odd(n) is true iff n is an odd number (that is, on the form 2m + 1 for some integer m).

If the argument isn’t an integer, an error is generated.

Examples

L ≔ SequenceList(1000); count(L, odd)/#L

1/2	(=0.5)

L ≔ SequenceList(10000) @ (n ↦ mod(n^2, 19)); count(L, odd)/#L

1263/2000	(=0.6315)

See also

• even