Self Doubt from GoClasses Test Series

Question

If L= { a^p | where p is any prime number }, then what is:-

i) L+

ii) L*

iii)L^3

Answer 1

L+ = {a^2 , a^3 , a^4 ……….}

L* = {e , a^2 , a^3 , a^4 ,……..}

Comments

L=a^p then how a^4 can belongs to a+? Please explain

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Given L = {a^2 , a^3 ,a^5 ,a^7 …….} = Set of all string where  a power prime numbers .

Now for L+ = {a^2 , a^3 ,a^5, a^7 …..}^+

To form a^4 just do  L^2 and take a^2 2 times you will get,

i.e.  L^2 = {a^4} .

just like that you can form any string  except a and Epsilon  in L^+.