Question

1:2:3:4:5:6:7:8:9:10= Скобки можно ставит где угодно и сколько угодно. Ответы: а)3 б)5 в)7 г)9

Answer 1

(1/2)/(3/4//(5/6)/7/8)/(9/10)=5

Answer 2

To solve this expression, you can add any number of parentheses wherever you like. Let's explore the possible combinations and find the solutions:

1:2:3:4:5:6:7:8:9:10

1:2:3:(4:5):6:7:8:9:10 => 1:2:3:9:6:7:8:9:10 => 1:2:(3:9):6:7:8:9:10 => 1:2:12:6:7:8:9:10 => 1:2:(12:6):7:8:9:10 => 1:2:72:7:8:9:10 => 1:2:(72:7):8:9:10 => 1:2:504:8:9:10 => 1:2:(504:8):9:10 => 1:2:504:9:10 => 1:(2:504):9:10 => 1:1008:9:10 => (1:1008):9:10 => 1008:9:10 => (1008:9):10 => 112:10 => (112:10) => 11.

So, we have found that the possible values are 11.

Out of the given options, the correct answer is:

г) 9