The obvious answer to the last one is "six", but I don't see what the numbers in brackets are supposed to refer to.
Nor do I follow what you mean by the first instruction, or by 1b.
Can you elucidate?
Ihave answer to 2b which is Ricks but 2a is The Cardinal number that is the sum of five and one and answer has 7 letters and then 5 letters ( 2 ) words
and it rhymes with Ricks .
Thanks for other answers .