letter & number sequence test Practice Questions Answers Test with Solutions & More Shortcuts

Question : 16 [Bank P.O. 2005]

How many 6s are there in the following number series, each of which is immediately preceded by 1 or 5 and immediately followed by 3 or 9?

2 6 3 7 5 6 4 2 9 6 1 3 4 1 6 3 9 1 5 6 9 2 3 1 6 5 4 3 2 1 9 6 7 1 6 3

a) None

b) One

c) Two

d) Three

e) None of these

Question : 17 [S.S.C. 2001]

How many 4's are there 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

a) Three

b) Four

c) Five

d) Six

Question : 18 [S.S.C. 2001]

How many combinations of two-digit numbers having 8 can be made from the following numbers?

8, 5, 2, 1, 7, 6

a) 9

b) 10

c) 11

d) 12

Question : 19 [R.R.B. 2003]

In the numbers from 100 to 1000, how many times digit 1 comes at the ten’s place?

a) 9

b) 10

c) 90

d) 900

Question : 20 [M.B.A. 2005]

How many 7s immediately preceded by 6 but not immediately followed by 4 are there in the following series?

7 4 2 7 6 4 3 6 7 5 3 5 7 8 4 3 7 6 7 2 4 0 6 7 4 3

a) One

b) Two

c) Four

d) Six