RRB-NTPC 2021 General Awareness
Practice subject-wise previous year questions
Question 451
GK
In the following number-pairs, the second number is obtained by applying certain mathematical operation(s) to the first number. Select the number-pair in which the numbers are related in the same way as are the numbers of the following pairs. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 - Operations on 13 such as adding to/subtracting from/multiplying with 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) 16, 47 24, 71
A
15, 62B
35, 104C
27, 101D
12, 45Question 452
GK
Each of the digits in the number 9238471 is arranged in ascending order from left to right. What will be the sum of the digits that are second from the left and second from the right in the new number thus formed?
A
6B
8C
10D
7Question 453
GK
What should come in place of the question mark (?) in the given series? 81 ? 36 21 11 6
A
48B
54C
56D
52Question 454
GK
In a certain code language, 'YORK' is coded as '0834' and 'KRAY' is coded as '3458'. What is the code for 'A' in the given code language?
A
3B
8C
4D
5Question 455
GK
FRUZ is related to IVXD in a certain way based on the English alphabetical order. In the same way, RHGP is related to ULJT. To which of the given options is ATPB related, following the same logic?
A
DESWB
DXSFC
DFSED
DXFSQuestion 456
GK
In a certain code language, A + B means 'A is the daughter of B' A - B means 'A is the father of B' A × B means 'A is the son of B' A ÷ B means 'A is the sister of B' Based on the above, how is Q related to D if 'Q + E - R × C ÷ D'?
A
MotherB
DaughterC
SisterD
Sister's daughterQuestion 457
GK
Which of the following numbers divides 81,42,42,541?
A
7B
12C
8D
15Question 458
GK
In covering a distance of 30 km, Anmol takes 7 hours more than Nikhil. If Anmol doubles his speed, then he would take 8 hours less than Nikhil. Anmol's speed is:
A
7 km/hrB
1 km/hrC
6 km/hrD
3 km/hrQuestion 459
GK
The current population of a town is 12,500. It increases by 52% and 30% in two successive years but decreases by 15% in the third year. What is the population of the town at the end of the third year?
A
20,995B
20,991C
20,990D
20,998Question 460
GK
The product of two consecutive natural numbers is 702. The greater of the two numbers is:
A
26B
27C
38D
24Question 461
GK
The LCM of the numbers 12.8 and 0.004 is:
A
128B
0.128C
1.28D
12.8Question 462
GK
A retailer offers the following discount scheme to his customers for the purchase of articles. 'Buy 30 and get 10 free' Find the discount percentage offered.
A
26%B
25%C
30%D
28%Question 463
GK
₹12,300 were divided among A, B and C such that 3 times the share of A = 6 times the share of B = 2 times the share of C. Find the share of A.
A
₹4,100B
₹3,915C
₹4,063D
₹3,924Question 464
GK
Find the median of 26, 13, 14, 15, 8, 36, 23, 35 and 50.
A
35B
23C
26D
50Question 465
GK
Town H is to the east of town R and to the north of town D. Town E is southeast of town H. In which direction is town D with respect to town R?
A
SouthwestB
SoutheastC
NorthD
WestQuestion 466
GK
Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only. (Left) >5 * \ + 9 & 6 # 6 4 $ & / @ # $ & 8 3 < (Right) How many such symbols are there that are immediately preceded by a number and also immediately followed by another symbol?
A
FourB
TwoC
OneD
ThreeQuestion 467
GK
A, B, C, D, Q, R and S are sitting around a circular table, facing the centre of the table. Q sits to the immediate right of D. Only three people sit between Q and S, when counted from the left of Q. Only three people sit between D and C. A sits to the immediate right of R. How many people sit between D and R, when counted from the right of R?
A
OneB
FourC
ThreeD
TwoQuestion 468
GK
In the following triads, each group of letters is related to the subsequent one following a certain logic. Select from the given options, the one which follows the same logic. JUNK - UJNK - KUJN LACK - ALCK - KALC
A
BUNS - UBNS - SUNBB
FROM - RFOM - MRFOC
MOST - OMST - OSTM D
MOCK - MCOK - KCOMQuestion 469
GK
If + means -, - means x, x means ÷ and ÷ means +, then what will come in place of the question mark (?) in the following equation? 51 + 8 − 8 ÷ 80 × 4 = ?
A
26B
20C
14D
7Question 470
GK
Based on the English alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which letter-cluster DOES NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)
A
OJRB
JEMC
GBID
LGOQuestion 471
GK
What should come in place of the question mark (?) in the given series? 90 90 91 95 104 ?
A
122B
120C
121D
119Question 472
GK
In a certain code language, 'EARS' is coded as '4259' and 'SARI' is coded as '9725'. What is the code for 'I' in the given code language?
A
5B
9C
2D
7Question 473
GK
Seven boxes A, B, C, D, E, F and G are kept one over the other but not necessarily in the same order. Only three boxes are kept below F. Only two boxes are kept between F and A. Only D is kept immediately above B. C is kept at some place below G and at some place above E. How many boxes are kept between B and F?
A
4B
1C
2D
3Question 474
GK
Based on the English alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which letter-cluster DOES NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)
A
LNHB
GICC
IKED
EGBQuestion 475
GK
If + means -, - means x, x means ÷, ÷ means +, then what will come in place of the question mark (?) in the following equation? $18 - 2 + 48 × 4 ÷ 21 = ?$
A
35B
45C
30D
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