Usually there is only one piccolo in an orchestra.
There is usually one piccolo in an orchestra, but the larger the orchestra, piccolos may need to be added.
there is four modern trumpets
it depends on how big the orchestra is. there is no set number.
An orchestra typically has two flutes.
A full symphony orchestra could easily have 80 people.
two or three
There may be up to three or four different types (different sizes and ranges) of Clarinet in a standard orchestra, depending on the particular music to be played. However, they would not be referred to as 'clarinet families'. The family to which clarinets belong is the 'woodwind family', which in a standard symphony orchestra also comprises flutes/piccolos, oboes, and bassoons. There are well over a dozen different types of clarinet, many of them very specialised, but you would not expect to find more than a few types occurring together in a standard orchestra.
One or two are usually sufficient.
The different sections of the orchestra break down into four basic families: strings, woodwinds, brass, and percussion.
The number of musicians for an orchestra is usually determined by the composer who will specify which instruments and how many of each is necessary to do his/her work justice.
I believe that a Piccolo does not have a reed but instead a mouthpiece.
In the modern orchestra or band the woodwind section usually contains piccolos, flutes, clarinets, oboes, bassoons, contrabassoons, soprano saxophones, alto saxophones, baritone saxophones, and tenor saxophones. However, there are many other woodwind instruments out there such as recorders, bagpipes, panflutes, aulos, duduks, ocarinas, shawms, crumhorns, gemshorns, didgeridoo, kortholt, dulcians, and shvis, just to name some off the top of my head. Hope this helped.