hello eveyone i have searched about this everywhere i got no answers

i have 306 Question typed in word office
and i have 15 student in class and i have to give each one 50 question of these 306 question
what method i can use so i can have 15 paper each have 50 question

can you help me of how to do such thing
what i remember is
for e.g
1st question will be question number 1(from the 306)
2nd question will be question number 16
3=31 // 4 = 46 // 5=61 // 6=76 // .... then number 10 will be 41
and so on that what i remember about the fixated random
but how i do this in word office idk .........