Others Maths Puzzle

If x and y are integers with (y − 1)^(x + y) = 4^3, then the number of possible values for x is

(A) 8
(B) 3
(C) 4
(D) 5
(E) 6

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Others Other Question

In how many ways can the letter of word FACTOR be permutated so that no consonant are together ?? In the arithmetic progression 2,5,8....upto 50 terms,and 3,5,7,9....upto 60 terms ,find how many pairs are identical and find the identical pairs.