Reasoning for bank exam part three

16. How many 6's are there in the following number-series which are preceded by 5 but not followed by 7 ?
56765649276743568649567
(A) One
(B) Two
(C) Three
(D) Four
(E) None of these
Ans : (B)
17. How many 4's are there in the following number-series which are preceded and followed by only an even number?
6432483154232464813242645
(A) One
(B) Two
(C) Three
(D) Four
(E) None of these
Ans : (D)
18. How many 2's are there in the following number series which are preceded by 5 but not followed by an odd number? .
13523545245226245267823527524
(A) One
(B) Two
(C) Three
(D) More than four
(E) None of these
Ans : (E)
19. How many 3's are there in the following series, which are not preceded by an odd number but followed by 4 ?
15323465347834923456343534
(A) None
(B) Two
(C) Four
(D) One
(E) None of these
Ans : (C)
20. How many B's are there in the following letter-series, which are followed by G but G is not be followed by S ?
BGSQBRNOBGNSQLTBGQTDBGUWXBGF
(A) 4
(B) 3
(C) 2
(D) 5
(E) None of these
Ans : (A)