If there are 999 bases in RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered

If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?

If there are 99 bases in an mRNA that codes for a protein with 33 amino acids and the base at position 30 undergo nonsense mutation , then what will be the length of polypeptide formed ?

If there are 99 bases in an mRNA that codes for a protein with 33 amino acids and the base at position 30 undergo nonsense mutation , then what will be the length of polypeptide formed ?

Is there any base triplet that codes for more than one amino acid?

A m-RNA which codes for a protein has 300 nucleotides. If the nucleotide at position 271 is deleted, how many codons of this mRNA will remain unaltered?