If @x is the number of distinct positive divisors of x , what is the value of @@90 ?
Kindly explain. Thank you!
@@90 means that you have to find first the number of divisors of 90 ( @90). You can easily find that they are 12. Then find the divisor of 12 because @@90 is like @(@90) thus @12. The divisor of 12 are 1,2,3,4,6,12 therefore the right answer is d,6.