Сколькими нулями оканчивается произведение: 1*2*3*4*5**2013*2014?

201 - количество целых десятков, то есть число будет с как минимум 201 нулём в конце. добавим к этому десятки образованные путём умножения 2 и 5 (2 * 5 = 10), и таких чисел будет столько же сколько и десятков, то есть 201 итого получается 201+201 = 402 это мое предположение, возможно больше, может я чего-то не учёл: 3

1) 84+х: 6=89 х: 6=89-84 х: 6=5 х=5*6 х=30 2)63*х+425=425 63*х=425-425 63*х=0 х=0: 63 х=0 3)15*к-45=0 15*к=0+45 15*к=45 к=45: 15 к=3 4)53*(а+1)=53 а+1=53: 53 а+1=1 а=1-1 а=0 5)3: х-20=25 3: x=20+25 3: x=45 x=45: 3 x=15 x*10-90=60 x*10=60+90 x*10=150 x=150: 10 x=15 x: 10+76=100 x: 10=100-76 x: 10=24 x=24*10 x=240 3333*x+1=10000 3333*x=10000-1 3333*x=9999 x=9999: 3333 x=3333 4*x=96: 3 4*x=32 x=32: 4 x=8 6*x=15*4 6*x=60 x=60: 6 x=10 20: x=48: 12 20: x=4 x=20: 4 x=5 x: 3=15: 5 x: 3=3 x=3*3 x=9

Ithink summer is the best season of all because it is warm, the nature is beautiful and we have great opportunities for rest. summer is a time of holidays. we can go anywhere, spend our time near a river or a lake on fresh, green grass, swim in warm water, or climb mountains, play different games, ride a bicycle and so on.i spend my summer holidays at my granny’s. there are many things there to do. what i did most of the time - i swam in the sea and sunbathed. sometimes i made a fire with my friends at the seaside and cooked potatoes there. it was wonderful. we told anecdotes to each other, and did everything we wanted. i also got used to walk alone in the forest.when august was coming to its end, i went on a small voyage by ship. the ship name was “sevastopol”.but this summer wasn’t for me only sugar and honey. i have passed through the graduating exams after school and entering exams in the university. so the bigger part of my summer vacations i spent sitting with the books. of course, it was not interesting, but i’m glad that i did it because now i’m a student of the best university in our country.