Strings and its method

Faq

Q1) What are Strings in ruby?
ans: Just like all other language , even in ruby string are the collection or group of character.

Q2) Are String mutable in ruby?
ans: Yes , string are mutable in ruby.

Q3) What is the function to find the size of the string?
ans: String_name.size()

Q4) How to convert string to integer ?
ans. String_name.to_i

Mcq

Q1) What will in this str variable after this operation => str = "Billy" + " Bob" 
a) billybob
b) Billybob
c) Billy + Bob
d) BillyBob

ans:d) BillyBob

Q2) What will be the output of this statement.
  str="pepcoder happy coding"
  puts str.index("hap");

a) 12
b) 9
c) 2
d) 8

ans: b) 9

Q3) What function is use to check whether a particular string is included in the string ?
a) index()
b) include?()
c) start_with?()
d) chomp()

ans: b) include?()

Q4) What is the output od this statement 
    str="pepcoder happy coding"
    puts str.count("^aeiou");
a) 15
b) 6
c) 1
d) 12

ans: a)15