нелишними

нелишними

"Нелишними" means "not unnecessary" or "useful/needed."

Here, 'нелишними' is used to indicate that the additional tips mentioned are beneficial and necessary in the given context.

Эти дополнительные советы будут нелишними.

These additional tips will not be superfluous.

In this sentence, 'нелишними' highlights that the old notes proved to have value, contrary to any possible expectation of being unnecessary.

Нелишними оказались и ваши старые заметки.

Your old notes also turned out to be useful.

Here, 'нелишними' suggests that having spare keys in the given circumstance would have been advantageous or advisable, emphasizing their necessity.

В этой ситуации запасные ключи могли бы быть нелишними.

In this situation, spare keys might not have been superfluous.