Arrays, Hashes and Strings in Ruby MCQ question and answer with solution | Ruby Programming MCQs

A. Checks if a substring exists in the string

B. Checks if a character exists in the string

C. Checks if the string includes another string

D. Error

A. Converts the first character to uppercase

B. Converts the entire string to uppercase

C. Converts the first character to lowercase

D. Converts the entire string to lowercase

A. concat

B. join

C. plus

D. +

A. 5

B. 6

C. Error

D. "hello"

A. Removes whitespace from the beginning and end

B. Removes newline characters from the end

C. Removes whitespace from the end

D. Removes newline characters from the beginning

A. push(element)

B. add(element)

C. append(element)

D. insert_end(element)

A. Removes the first element of the array

B. Removes the last element of the array

C. Returns a new array with the last element removed

D. Inserts an element at a specified index

A. :

B. @

C. $

D. %

A. join(separator)

B. concat(separator)

C. merge(separator)

D. combine(separator)

A. delete(key)

B. remove(key)

C. erase(key)

D. exclude(key)