FOR THE 50x25 - THERE ARE 40 STICKERS ON AN A4 SHEET. THEREFORE A QUANTITY OF 10 WOULD = 400 SITCKERS.
FOR THE 75x37 - THERE ARE 17 STICKERS ON AN A4 SHEET. THEREFORE A QUANTITY OF 10 WOULD = 170 STICKERS.
FOR THE 100x50 - THERE ARE 10 STIKCERS ON AN A4 SHEET. THEREFORE A QUANTITY OF 10 WOULD = 100 STICKERS