Verbal Reasoning - Mental Ability Questions

If "α" denotes "subtracted from", "β" denotes "multiplied by", "θ" denotes "added to" and "δ" denotes "divided by", then 10 θ 8 β 4 δ 8 α 9 = ?

In the following question, select the related number from the given alternatives.
4 : 17 : : 7 : ?

If 5 x 4 x 0 = 405
3 x 2 x 8 = 283
then 1 x 7 x 6 = ?

If SUN = 108, MOON = 114. What is STAR = ?

Which one of the following diagram represent the relationship among Parliament, Council of Ministers and Prime Minister?

Options:

In the following question, select the missing number from the given series.
1, 3, 6, 11, 18, ?

From the given words, select the word which cannot be formed using the letters of the given word.
HUMBLING

If 40@8 = -5, 30@3 = -10 and 20@5 = -4, then find the value of 60@3 = ?