Ruby array MCQ

11. Each element in an array is associated with _______.

A. Numbers
B. Index
C. Integer
D. None of the above

View Answer

12. Array index -1 represent ______.

A. First Element
B. Middle element
C. Last element
D. Reverse the array

View Answer

13. Which of the following command is used to tell the size of array?

A. arraynames.size
B. arraynames.length
C. arraynames.len
D. Both A and B

View Answer

14. What will be the output of the given code?

digits = Array(0..9)
num = digits.at(6)
puts #{num}

A. 5
B. 6
C. 7
D. 8

View Answer

15. What will be the output of the given code?

a = [ a, b, c ] puts a.pack(a3a3a3)

A. ABC
B. abc
C. BCD
D. bcd

View Answer

16. What will be the output of the given code?

array = [100, 200, 300, 400, 500]
print array[4]

A. [100, 200, 300, 400, 500]
B. 300
C. 400
D. 500

View Answer

17. What will be the output of the given code?

string_array = [a,e,i,o,u]
print string_array[3]

A. ["a","e","i","o","u"]
B. e
C. i
D. o

View Answer

18. What is the output of the given code?

a=[[a,b]]
b=[[e,a]]
print a + b

A. [["a", "b"], ["e", "a"]].
B. [["2a", "b"], ["e"]].
C. TRUE
D. FALSE

View Answer

19. What will be the output of the given code?

a=[1,2,3,4,5]
b=[1,2,4,6,8]
if a[3]==b[2]
    print Equal
end

A. TRUE
B. FALSE
C. Equal
D. error

View Answer

20. What is the output of the given code?

array1 = [[1,2,3,4,5],[0,0,0,0]]
print !array1

A. Error
B. [[1, 2, 3, 4, 5], [0, 0, 0, 0]].
C. TRUE
D. FALSE

View Answer

---

Discussion