Let d(n) denote the number of positive divisors of a positiv

Please wait...
THANKU FOR BEING A PART OF OUR JOURNEY TO BRING "REVOLUTION IN EDUCATION"
We Genuinely APPRECIATE your PATIENCE

Coming Soon

M: +1.00/-0.33

Let d(n) denote the number of positive divisors of a positive integer n. Which of the following are correct?

1. d(5) = d(11)

2. d(5).d(11) = d(55)

3. d(5) + d(11) = d(55)

Select the correct answer using the code given below:

[CDS II 2020 Mathematics Past paper]

1 and 3 only

1 and 2 only

2 and 3 only

1, 2 and 3