please help with java question A 4-by-7 array like the following int arr[][] = n

Question

please help with java question

A 4-by-7 array like the following

int arr[][] = new int[4][7];

contains:

4 rows and 7 columns

7 rows and 4 columns

3 rows and 6 columns

6 rows and 3 columns

· The following code declares and initializes an ArrayList collection variable that can only store Scanners (you may assume that ArrayList and Scanner have been properly imported)

ArrayList<Scanner> tsaInventory = new ArrayList<Scanner>();

True

False

The following code:

int fib[][] = {{0, 1, 1}, {2, 3, 5, 8}, {13, 21, 34, 55, 89}};

System.out.print(fib[2][6]);

displays 13

displays 8

displays an unknown value

does not compile

throws an Exception at runtime

4 rows and 7 columns

7 rows and 4 columns

3 rows and 6 columns

6 rows and 3 columns

· The following code declares and initializes an ArrayList collection variable that can only store Scanners (you may assume that ArrayList and Scanner have been properly imported)

ArrayList<Scanner> tsaInventory = new ArrayList<Scanner>();

True

False

The following code:

int fib[][] = {{0, 1, 1}, {2, 3, 5, 8}, {13, 21, 34, 55, 89}};

System.out.print(fib[2][6]);

displays 13

displays 8

displays an unknown value

does not compile

throws an Exception at runtime

Explanation / Answer

4 rows and 7 columns

True

throws an Exception at runtime

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