Cрочно!!!!Some sentences contain a mistake. Find them. Write down the numbers

Cрочно!!!!
Some sentences contain a mistake. Find them. Write down the numbers of the sentences that are true. В ответе запиши последовательность цифр в порядке возрастания без пробелов и символов препинания. К примеру, 245

1) She has neither brothers or sisters.

2) You havent travelled much, havent you?

3) Bobby felt excited about his first cross-country trip.

4) My older brother is the best player in his team.

5) I am very keen on playing computer games.

6) She looks much more younger wearing this blue jacket.