RRB PO Mains Reasoning Questions 2021 (Day-02)

Dear Aspirants, Our IBPS Guide team is providing new series of Reasoning Questions for RRB Po Mains 2021 so the aspirants can practice it on a daily basis. These questions are framed by our skilled experts after understanding your needs thoroughly. Aspirants can practice these new series questions daily to familiarize with the exact exam pattern and make your preparation effective.

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Input output

Direction (1-5): Study the following information carefully to answer the given questions.

Number arrangement machine when given an input line of numbers rearranges them following a particular rule in each step. The following is an illustration of input and rearrangement.

Step 6 is the last step.

Input: 5263    3131         4262       7536        6525      8266

1) How many numbers are there between 3rd number from the left end and 3rd number from the right end in step III?





E. None of these

2) What is the product of the numbers from both ends in step 4?





E. None of these

3) Which of the following is 2nd to the right of the number which is 3rd from the left end in step 3?





E. None of these

4) What is the sum of the even numbers in step II?





E. None of these

5) What is the difference between the numbers in Step V?





E. None of these

Critical reasoning

6) In each question below a statement is followed by three set of assumptions numbered I, II and III. You have to decide which of the following assumption is/are implicit.

Statement: In India Diesel-run trains will soon become history. Phasing out Diesel locomotives and replacing them with electric engines will not only reduced carbon emission but also lower the expense of railways.

Which of the following has been assumed in the given statement?


(i) Indian railways have to spend lots of money on diesel locomotives every year.

(ii) Diesel engines will take a lot of time to acquire speed as compared to electric engines.

(iii) India needs to adapt best method to lower carbon emission.

A. Only II and III

B. Only I and II

C. Only III

D. Only I, II and III

E. Only I

7) Cocoas and chocolate products have been used as medicine in many cultures for centuries. Chocolate is made from plants which mean it contains many of the health benefits of leafy vegetables.

Which of the following statements weakens the above arguments?

I). Dark chocolate contains a large number of antioxidants which slowdowns the aging process.

II). A small study revealed that regular intake of chocolate increase insulin sensitivity thus lowering the chances of diabetes.

III). Green leafy vegetables have flavonoids which protect skin from UV rays.

IV). Chocolates have 3 types of fats one out of which increase the cholesterol level.

V). Cocoas increases blood flow to the retina thus giving a boost to vision.

A. Only IV

B.I and V

C. Only III

D. None of the given statements

E. Both III and IV

Coding decoding

Directions (8-10): Study the following information carefully and answer the below questions.

In a certain coded language,

‘Fresh mind happy life’ is coded as ‘H#14 [email protected] K#33 [email protected]

‘Kashi city of temple’ is coded as ‘S#20 [email protected] [email protected] [email protected]

 ‘One airport in Banaras’ is coded as ‘M#20 I#21 [email protected] Z#21’

8) What is the code for ‘excellent’?

A[email protected]


C[email protected]


E. None of these

9) What is the code for ‘collect’?

A[email protected]

B[email protected]



E. None of these

10) What is the code for ‘life’?

A[email protected]

B[email protected]


D[email protected]

E. None of these

Answers :

Directions (1-5) :

In step I – the number is subtracted with its own revise order (eg: 5263-3625)

In step II – the product of the 1st and last and 2nd and 3rd digits of the number, then sum the two product values.

In step III – Multiplication and Addition operation performed alternatively from left to right.

In step IV – sum of the first 3 numbers from left, then sum of the next three numbers that’s start with second from left end and so on.

In step V – Difference of the 1st and 2nd numbers from the left end and 1st and 2nd numbers from the right end.

In step VI – Product of the two values in step V


Step 6 is the last step.

1) Answer: D

2) Answer: A

3) Answer: D

4) Answer: D

5) Answer: B

6) Answer: C

Clearly, reducing carbon emission is the prime focus of government.

Hence, option C is correct choice.

7) Answer: A

Chocolates have three types of fats, one out of which increase level of cholesterol thus this statement weakens the argument because it showing negative quality of chocolates.

Directions (8-10) :

Symbols – Number of letters count if,

Even number of lettersà @ Else #

Numbers – Sum of the place value of the first and last letter of the word.

Alphabet – Opposite of the previous last letter of the word.

8) Answer: D

9) Answer: D

10) Answer: B

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