Elitmus Exam Numerical Ability Permutation and Combination

Two letters are selected at random from the set of English alphabets
what's the probability that
1)both are vowels?
2)both are consonants?
3)one is vowel and the other is consonant?

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Elitmus Other Question

I gt
verbal-68.34%
Ps-83.44%
Quant-61.23%
10th-92%,12th-89%, graduation-80.4%
Is dere any chances?? Or shd i reappear?? Please rply
The number of permutations of the letters a,b,c,d,e,f,g such that neither the pattern 'beg' nor 'acd' occurs is
a.4806
b.420
c.2408
d.non of these