Alphanumeric Series – Railway Reasoning (Part- 1)

Total Questions: 50

21. (Left) T Y A N E C M K E W A F H E Q A P M N B E D H E K U W S D A N M A W E (Right) [Group - D 17/08/2022 (Evening)]

How many such consonants are there in the series which are immediately preceded by a vowel and also immediately followed by a vowel?

Correct Answer: (a) Five
Solution:

Given series:
(Left) T Y A N E C M K E W A F H E Q A P M N B E D H E K U W S D A N M A W E (Right)
There are 5 such consonants which are immediately preceded by a vowel and also immediately followed by a vowel i.e. (A N E), (E W A), (E Q A), (E K U) and (A W E).

22. (Left) 4 3 15 6 1 5 9 8 3 62 7 9 1 26 41 3 82 5 3 (Right) [Group - D 18/08/2022 (Afternoon)]

If all the numbers in the series are arranged in ascending order, then which number will be fourth from the left?

Correct Answer: (d) 3
Solution:

Given series:
(Left) 4 3 15 6 1 5 9 8 3 62 7 9 1 26 41 3 82 5 3 (Right)
After arranging it in Ascending order required set is:
1, 1, 3, 3, 3, 3……………………..82.
So, at fourth from the left 3.

23. K I O X J E T R U L E B A C K J M N How many such vowels are there each of which is immediately followed by atleast two consonants appearing together in the above series? [Group - D 18/08/2022 (Afternoon)]

Correct Answer: (b) 3
Solution:

Given series: K I O X J E T R U L E B A C K J M N
There are 3 such vowels which are immediately followed by at least two consonants appearing together
i.e. ( O X J), ( E T R), ( A C K)

24. 2 6 7 4 9 3 6 5 1 9 5 2 4 5 9 4 2 3 7 1 [Group - D 18/08/2022 (Evening)]

How many even numbers are immediately preceded by an odd number and immediately followed by a prime number?

Correct Answer: (a) 2
Solution:

Given series:
2 6 7 4 9 3 6 5 1 9 5 2 4 5 9 4 2 3 7 1
Therefore, such numbers are : 365, 942
There are only 2 such numbers.

25. STED, LAYM, JOEK, CLDP [Group - D 22/08/2022 (Morning)]

If in each of the clusters, each letter is changed to the next letter in the English alphabetical order, how many letter clusters thus formed will have no vowel?

Correct Answer: (d) Two
Solution:

Given letter cluster:
STED, LAYM, JOEK, CLDP
On changing the letters in each cluster to the next letter in alphabet, we got
TUFE, MBZN, KPFL, DMEQ .
Therefore, there are two such cluster (MBZN, KPFL).

26. 2 5 6 9 8 0 3 8 6 7 2 5 2 2 6 8 3 6 5 3 [Group - D 22/08/2022 (Afternoon)]

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

Correct Answer: (b) 4
Solution:

Given series :
2569 803867 2522 683653
There are 4 such numbers which are immediately preceded by an even
number and immediately followed by an odd number
i.e. (8 0 3), (8 6 7), (6 8 3) and (6 5 3)

27. 7 T % N 9 * M S 3 U = L 8 Y @ G & 3 E > 5 & R 3 ! K # 7 % H = Y 6. [Group - D 23/08/2022 ( Morning)]

Find out the total number of letters that are immediately followed by a number and immediately preceded by a symbol.

Correct Answer: (c) 4
Solution:

Given series:
7 T % N 9 * M S 3 U = L 8 Y @ G & 3 E > 5 & R 3 ! K # 7 % H = Y 6
There are 4 letters which are immediately preceded and followed by a symbol and number respectively,
i.e. (%N9, = L8, &R3, =Y6)

28. This question is based on the five, three-digit numbers given below: [Group - D 23/08/2022 (Afternoon)]

(Left) 815 458 512 630 235 (Right)
What will be the result if the third digit of the second largest number is added to the second digit of the smallest number?

Correct Answer: (c) 3
Solution:

Given series:
(Left) 815, 458, 512, 630, 235 (Right)
Here the second largest number is 630.
So, the third digit of this number is 0.
The smallest number is 235.
Then the second digit of this number is 3.
Hence, required sum = 3+0=3

29. # 9 1@ 4 * 7 ^ 5 3 # 9 1 < 5 4 @ 3 $ # 2 * 6 ! 4 2 & 9 < 3 6 [Group - D 23/08/2022 ( Evening)]

How many such numbers are there which are immediately preceded by a symbol and immediately followed by an even number?

Correct Answer: (b) 3
Solution:

# 9 1@ 4 * 7 ^ 5 3 # 9 1 < 5 4 @ 3 $ # 2 * 6 ! 4 2 & 9 < 3 6
There are 3 such numbers.

30. (left) 2 5 4 3 7 8 6 7 9 4 3 7 8 6 2 3 4 8 9 4 8 7 6 4 3 7 2 8 9 7 5 3 2 4 5 9 (right) [Group - D 24/08/2022 ( Morning)]

How many such odd numbers are there in the above series which are immediately preceded by an even number and also immediately followed by an even number? (Do any calculations from left to right only)

Correct Answer: (c) four
Solution:

Given series: (Left) 254 37867943786 234894876 43728 97532459 (Right) From the above series it is clear that there are 4 odd numbers which are immediately preceded and followed by an even number.
i.e. ( 254, 234, 894, 876)