Find the missing alphabets – d, f, h, l, n, ?, ?, x[spoiler]
The answer is r,t.
First, you need to assign numbers to the alphabet –
nd so on.
Then, choose the letters that correspond to the prime numbers(starting from 3) –
Then, the letters that come just after the letters above
d, f, h, l, n, r, t, x[/spoiler]