Предмет: Математика, автор: savelik66

1+4=5
2+5=12
3+6=21
8+11=?

Ответы

Автор ответа: hote
0
1+4=5
2+5=12
3+6=21
8+11=?

Давайте рассуждать:

1) решение:
1+4=5 - вроде все верно

2+5=12 как можно получить 12?
например так: 2*5+2=12

смотрим третью строчку
3+6=21
3*6+3=21 все верно

четвертая строчка
8+11?
8*11+8=96

Ответ 96

2) решение 
можно рассуждать и другим образом

1+4=5 все верно

2+5=12, как еще можно получить это число?
5(из первой строчки)+2+5=12

3+6=21, рассуждаем так же
12(из второй строчки)+3+6=21

8+11=?
21(из третьей строчки)+8+11=40

Ответ: 40

Решением к этой задаче могут быть два числа




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