How many cells (number of rows times number of columns) would this matrix have?

General
1

Hi Guys,
I am very new to R programming. And currently enrolled with one online course from Harvard 'Data analysis for Life Sciences Series'. I was wondering if anyone of know if anyone of you know what this means How many cells (number of rows times number of columns) would this matrix have? '. I tried to do number of matrix * number of columns and the answer was wrong.
Can you please help me ?
Thanks,
Shafali

2

You can use the dim() function to find the dimensions of a matrix object.

3

I did and this is what comes up 22215 189. In this 22215 is the no of rows and 189 is no of columns, but when I multiply this both i.e. 22215*189 =4198635. It say worng value.

4

I don't understand. Why do you say that it is the wrong value?

5

Answer is 493506225 (=22215²)

7

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