найдите сумму всех положительных нечетных двузначных чисел делящихся на 3

составьте уравнение реакций с помощью которых можно осуществить сл превращения?

CaCO3→CaO→Ca(OH)2→CaCO3→Ca(NO3)2

В магазине осталось девять одинаковых с виду пачек чая с подарками внутри.В пяти пачках спрятаны магниты,а в оставшихся чайные ложки,Лена купила три пачки чая надеясь,что во всех пачках окажутся ложки.

1.Найдите вероятность события:

С=(все три подарка-ложки)

2.Можно ли считать событие С маловероятным?Обоснуйте своё мнение.

Підготуйте розповідь про літературного героя,приклад якого вважаєте цінним для себе.(Етика)

Напишите о чём там говориться на английском своими словами!

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