Which one of the following word can NOT be formed using the letters of the word 'PROFESSIONAL'?

Which one of the following is NOT a number of the series? 1, 8, 27, 64, 125, . . .

The next term of the following letter series will be : CAE, HFJ, MKO, RPT, ….

If the letters of the word “PRODUCT” are arranged alphabetically, then which letter would be last letter of word?

If the sequence of the English alphabets is reversed, which of the following would be the 14th letter from your left?

How many 4's are there in the following which are preceded by 7 but NOT followed by 3 ? 5 9 3 2 1 7 4 2 6 9 7 4 6 1 3 2 8 7 4 1 3 8 3 2 5 6 7 4 3 9 5 8 2 0 1 8 7 4 6 3