What does the keys method return when called on a hash in Ruby?
A. Array of all keys
B. Array of all values
C. Array of key-value pairs
D. Number of keys in the hash
Answer: Option A
A. Array of all keys
B. Array of all values
C. Array of key-value pairs
D. Number of keys in the hash
Answer: Option A
Which method in Ruby is used to add an element to the end of an array?
A. push
B. pop
C. append
D. insert
What will array.size return in Ruby, if array = [1, 2, 3, 4, 5]?
A. 5
B. 4
C. [1, 2, 3, 4, 5]
D. "array"
Which method is used to access the value associated with a specific key in a hash in Ruby?
A. access
B. get
C. fetch
D. value
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