Alphanumeric Series – Railway Reasoning (Part- 5)

Total Questions: 24

1. How many 7s are there in the following series which are not immediately followed by 3 but immediately preceded by 8 ? [RRB NTPC 03/02/2021 (Evening)]

898 76226 3269 7328 7277 8747 794

Correct Answer: (b) 3
Solution:

In the given series we can observe that there are three 7’s which are not immediately followed by 3 but preceded by 8.

2. Np4@8cQ9%6TkF3=5g4&RwJX [RRB NTPC 05/02/2021 (Morning)]

How many such numbers are there in the sequence, each of which is immediately preceded by a letter and immediately followed by a symbol?

Correct Answer: (a) 4
Solution:

N p 4 @ 8 c Q 9 % 6 T k F 3 = 5 g 4 & R w J X
4 numbers are there in the sequence, each of which is immediately preceded by a letter and immediately followed by a symbol.

3. Np4@8cQ9%6TkF3 = 5g4&RwJX [RRB NTPC 05/02/2021 (Morning)]

Which character is 5th to the right of the 18th character from the right end?

Correct Answer: (c) T
Solution:

“ N p 4 @ 8 c Q 9 % 6 T k F 3 = 5 g 4 & R w J X “ 5th to the Right of the
18th character from the right end = T

4. In the following sequence of digits, how many times have the numbers 4, 1 and 6 appeared together, 1 being in the middle and 4 and 6 being on either side of 1 ? [RRB NTPC 11/02/2021 (Morning)]

2 1 4 6 1 4 6 3 7 1 4 7 6 1 2 4 1 4 6 1 6 2 1 2

Correct Answer: (b) one
Solution:

214 614 637147612414616212
As we observe the given series we found that only one time 614 is there in which 1 is in the middle and 4 and 6 is either side.

5. In the following list of numerals, how many 3s are followed by 3, but NOT preceded by 3? [ RRB NTPC 05/04/2021 (Evening)]

2 9 6 3 3 4 5 7 8 3 3 3 4 6 2 3 3 3 3 8 6 2 3

Correct Answer: (c) 3
Solution:

2 9 6 3 3 4 5 7 8 3 3 3 4 6 2 3 3 3 3 8 6 2 3 Three 3s are followed by 3, but NOT
preceded by 3.

6. he number of symbols that are preceded by a number in the given expression is __________ [RRB ALP 09/08/2018 (Morning)]

R+JM2$#QR?*O@7F3

Correct Answer: (b) 1
Solution:

R+JM 2$ #QR?*O@7F3
There is only 1 symbol which is preceded by a number.

7. The number of symbols that are preceded by a letter and not followed by a number in the following expression is_________ [RRB ALP 09/08/2018 (Evening)]

A$1%MB#6&NC=3!OD+KP

Correct Answer: (b) 1
Solution:

A$1%MB#6&NC = 3 ! O D+K P
One such symbol exists.

8. $M@A#N2B4O&3C5P+D2 [RRB ALP 09/08/2018 (Evening)]

Using the above sequence find the characters that do NOT belong to the group: AO+, MB5, N32, $2P

Correct Answer: (b) $2P
Solution:

$M@A#N2B4O&3C5P+D2
 In , AO+, MB5, N32 all letters and symbols have 5 letters or symbols between them. But $2P has gaping of 5 letters between $ and 2 while 7 letters gaping between 2 and P

9. In the given series, how many 8s are there that are not divisible by the number to its left but completely divisible by the number to its right. [RRB ALP 10/08/2018 (Morning)]

563248889266588343

Correct Answer: (b) 1
Solution:

Given series is : 5632488892665 8 8343. We can clearly see that there is only one 8 that are not divisible by the number to its left i.e.5.

10. RB75E%M3W48Q9#B2A＄MS [RRB ALP 10/08/2018 (Afternoon)]

In the above sequence which term is third to the right of the twelfth term from the left end?

Correct Answer: (d) B
Solution:

Twelth from the left is Q and third to the right of Q is B.
RB75E%M3W48 Q 9# B 2A＄MS