Alphanumeric Series – Railway Reasoning (Part- 1)

Total Questions: 50

11. (Left) K L % Y & 4 E 2 * 3 M & 7 S W # 8 2 H * L (Right) [NTPC CBT II Level 5 (15/06/2022) Shift 1]

If all the symbols are dropped from the series, which of the following will be seventh from the left?

Correct Answer: (b) 3
Solution:K L % Y & 4 E 2 * 3 M & 7 S W # 8 2 H * L
As per question,
K L Y 4 E 2 3 M 7 S W 8 2 H L
Now, 3 will be seventh from the left.

12. If the letters in each the following strings are omitted and then the remaining numbers are arranged in increasing sequence, which numbers will come in the middle? [NTPC CBT II Level 5 (15/06/2022) Shift 3]

33A, 44R, 41V, 54D, 21S, C56, D46, V68, F36, G32, 61C, 47G, N55

Correct Answer: (a) 46
Solution:

After omitting all the letters in strings ⇒ 33, 44, 41, 54, 21, 56, 46, 68, 36, 32, 61, 47, 55
After arranging all the numbers in increasing order ⇒ 21, 32, 33, 36, 41, 44, 46, 47, 54, 55, 56, 61, 68
Hence, we can see that 46 in the middle of that series.

13. If the given sequence QwE@rTy;MnB#vCx/DfG*hJk is reversed, then what will be the letter that precedes the letter D? [NTPC CBT - I 05/01/2021 (Evening)]

Correct Answer: (d) f
Solution:

In the given sequence, f is after D but when we reversed the sequence f will come before D.

14. How many 3s are there in the given series that are followed by 9 and preceded by 8? [NTPC CBT - I 08/01/2021 (Evening)]

1 8 3 9 7 9 3 9 97 6 3 4 9 8 3 9 7 4 5 8 3 9 6 8 3 0 0 7 7 5 3 6 8 2 6 5 9 6 9

Correct Answer: (c) 3
Solution:

Given that :
18 3 979399763498 3 97458 3 9683007753 68265969 There are three 3s in the given series that are followed by 9 and preceded by 8.

15. In the following letter series,how many times does JKL occur in such a way that this sequence is followed by N? [NTPC CBT - I 11/01/2021 (Morning)]

BCNKLJKLMJKLQJKLMNJKLABJKLJKL MNJKLSKTKJLLKJNJKLJLTKLT

Correct Answer: (b) 0
Solution:

0 times JKL occurs in the given series in such a way that this is followed by N.

16. T% N 9 * M $ 3 U = L 8 Y @ G & 3 E > W & 4 R F ! K. [Group - D 17/08/2022 (Morning)]

Find out the total number of symbols that are immediately preceded by a number and immediately followed by a letter.

Correct Answer: (a) 1
Solution:

Given series:
T % N 9 * M $ 3 U = L 8 Y @ G & 3 E > W & 4 R F ! K
There is only one place in this series where a symbol is preceded by a number and followed by a letter, i.e. ( 9 * M)

17. Y H S D S Y I R A Y E U G I R O A B U B R X M P Q . [Group - D 17/08/2022 (Morning)]

How many such vowels are there in the series each of which is immediately preceded by a consonant and also immediately followed by a consonant?

Correct Answer: (c) 4
Solution:

Y H S D S Y I R A Y E U G I R O A B U B R X M P Q
Here, the total no. of pairs = 4.
(i.e. YIR, RAY, GIR, BUB)

18. 5 1 2 6 3 8 6 5 3 6 5 3 2 5 6 9 5 1 7 2 [Group - D 17/08/2022 (Afternoon)]

How many such numbers are there in the above series, each of which is immediately preceded by an even number and also immediately followed by an even number?

Correct Answer: (c) 2
Solution:

Given series:
5 1 2 6 3 8 6 5 3 6 5 3 2 5 6 9 5 1 7 2
Total such numbers in the given series which are immediately preceded and followed by an even number = 2 i.e. (6 3 8), (2 5 6).

19. (left) 3 ^ % 7 2 4 £ 3 ¥ 4 ያ @ 8 8 & 6 @ 1 (Right) [Group - D 17/08/2022 (Afternoon)]

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

Correct Answer: (a) 3
Solution:

Given series: (left) 3 ^ % 7 2 4 £ 3 ¥ 4 ያ @ 8 8 & 6 @ 1 (Right)
Total such numbers in the given sequence which are immediately followed by a symbol and also preceded by a symbol = 3
i.e. ( £ 3 ¥ ), ( ¥ 4 ያ ), ( & 6 @ ).

20. L @ S *J ^ B U # W R ＜ E @ N S # B * H ! A & L＜ W Q [Group - D 17/08/2022 (Evening)]

How many symbols are immediately followed by a consonant and immediately preceded by a vowel?

Correct Answer: (c) 3
Solution:

Given series :
L @ S ✳ J ^ B U # W R < E @ N S # B ✳ H ! A & L < W Q There are just 3 symbols which are immediately followed by a consonant and immediately preceded by a vowel i.e. ( U # W ), ( E @ N ) and ( A & L)