Because in Harry Potter we are not told exact numbers for how many children there are we can only go off what we know. In Harry's year there are only 5 Gryffindor boys (Harry, Ron, Neville, Dean and Seamus) if we use this as norm (5 boys and 5 girls per year per house) then we would have 40 students a year. 40 times 7 would give us 280 students for the whole school.
however J.K Rowling has previously stated that there are about 1000 students. however this number has been questioned if there where 1000 students then there would be 250 people per house (1000 divided by 4). if we divide that by how many years there are (250 divided by 7) we get 35.7 students per house per year (we'll say 35 because you cant have .7 of a person) if we half this number (for boys and girls) we get about 17-18 boys and girls per year per house. In the Harry Potter Books only 5 boys are ever mentioned in harrys year and house. this is a dramatic difference than 17 boys per house per year.
however i have a possible theory for this. lets look at the sorting speach throughout the years:
gryffindor take the brave and bold
slytherin take the proud and pure
ravenclaw take the smart and witty
and HUFFLEPUFF TAKES THE REST
is it possible that there are only 5 brave boys in harrys year and also 5 girls as well (lavender, hermione, fay, fays friend and parvati). that there are only 5 ravenclaw boys (terry boot, michael corner, anthony goldstein, kevin entwistle and stephen cornfoor) and only 5 ravenclaw girls (unkown). only 5 slytherin boys (draco, crabbe, goyle, blaise and nott) and only 5 slytherin girls (unknown). thus making over 55 hufflepuff boys and girls per year. (as they take the rest)
we only know of a few hufflepuffs but for nearly every other house we have a list of exactly 5 students. therefore to support J.K rowlings claim there would have to be about 790 hufflepuff students at one time.
it is really up to you which answer you go for. j.k rowling wrote the book so whatever she says is right however logic would say that there are only ever 280 students at 1 time (and im a ravenclaw so im going to go with logic)
Nmyphadora Tonks died during the Battle of Hogwarts on 2nd May 1998.
They die in the last book in the battle of hogwarts
A lot of people died! People such as- Snape Fred Weasley Lord Voldemort Lupin Tonks Bellatrix Peter Pettigrew Nagini (Voldemort's snake) Colin Creevy (Not shown in the movie I believe, but it IS in the book) and many Hogwarts students and death eaters during the battle at Hogwarts.
in the end... arthur- survives hogwarts battle (bitten by voldemort's snake nagini in book/film 5) molly- survives hogwarts battle charlie- survives hogwarts battle bill- bitten by werewolf fenrir greyback but survives marry fleur dreacour and survives hogwarts battle Percy- returns to family after being a ministry of magic freakoid Fred- dies in hogwarts battle george- loses and ear in book 7/ film7.1 finds it hard to reover from Fred's death but marries Angelina ex girlfriend/quidditch captain Ron- marries hermionie after surviving hogwarts battle. they have 2 children Hugo and rose Ginny-marries harry an has 3 children- James, albus severus and lily and has a god child-teddy lupin(lupin and tonks' child but the parents die in hogwarts battle
Assuming you mean during the Battle of Hogwarts, it isn't exactly clear. Harry says there were 50 unnamed people lined up after the battle, including others that he knew. It's possible that wasn't all of the dead so at least 70+ died at the battle.
The Weasley twins were 19 when Fred died in The Battle of Hogwarts.
unknown. All we know is that he died in the battle of hogwarts
Fred Weasley, Nymphadora Tonks, Remus Lupin, Colin Creevey, and about 50 others that weren't mentioned died in the Battle of Hogwarts.
Nmyphadora Tonks died during the Battle of Hogwarts on 2nd May 1998.
They die in the last book in the battle of hogwarts
Remus Lupin died on the 2nd May 1998 during the battle of Hogwarts. He was killed by Antonin Dolohov.
how many people died at the battle of edgehill
He dies Within the battle of Hogwarts by an Explosion, but He was enjured by McGonnagal. And his Sister Alecto , She escaped and disappeared after his sister died
Fred Weasley died on May 2, 1998 at the Battle of Hogwarts when a wall collapsed on him.
125 people died in the battle of palmitos ranch
It is not sure that winky died or not as there was no mention of her in the deathly hallows ,so we can assume that she survived in the battle of Hogwarts.
A lot of people died! People such as- Snape Fred Weasley Lord Voldemort Lupin Tonks Bellatrix Peter Pettigrew Nagini (Voldemort's snake) Colin Creevy (Not shown in the movie I believe, but it IS in the book) and many Hogwarts students and death eaters during the battle at Hogwarts.