Why is the genetic code considered as commaless?

64 Codons constitute genetic code because -

Why is genetic code a triplet one ?

In each questions a word Is written In capital letters with one letter underlined. For each letter of that word there is a code written in small letters. That code is denoted by 1,2, 3,4 or 5, though not in the same order. You have to find the exact code for the underlined letter of the word. The number of that code is your answer. Please note that letters appearing in different words may be coded differently. underlineR I G H T 1) fk 2) ot 3) qv 4) ej 5) di

In each questions a word Is written In capital letters with one letter underlined. For each letter of that word there is a code written in small letters. That code is denoted by 1,2, 3,4 or 5, though not in the same order. You have to find the exact code for the underlined letter of the word. The number of that code is your answer. Please note that letters appearing in different words may be coded differently. R underlineE A D Y 1) d 2) d 3) g 4) h 4) S

There are 64 codons in genetic code dictionary because

Number of of codons in a genetic triplet code is