Challenger App

No.1 PSC Learning App

1M+ Downloads
Each of the digits in the number 318924765 is arranged in descending order from left to right. The position of how many digits will remain unchanged as compared to that in the original number?

AThree

BTwo

CNone

DOne

Answer:

D. One

Read Explanation:

The position of one digit will remain unchanged.

  1. Original Number:
    3 1 8 9 2 4 7 6 5

  2. Arranged in Descending Order (highest to lowest):
    9 8 7 6 5 4 3 2 1

  3. Position-by-Position Comparison:

    Original Digit

    Descending Digit

    Status

    3

    9

    Changed

    1

    8

    Changed

    8

    7

    Changed

    9

    6

    Changed

    2

    5

    Changed

    4

    4

    Unchanged

    7

    3

    Changed

    6

    2

    Changed

    5

    1

    Changed

Only the digit 4 remains in its exact original position (the 6th position from the left).


Related Questions:

In a certain code language, ‘inspire others daily’ is written as ‘lo ab ef’ and ‘daily routine matters’ is coded as ‘mo ef tu’. How is ‘daily’ coded in the given language?

Refer to the following series and answer the question (all numbers are single digit numbers only).

(Left) 6 4 5 7 8 4 6 3 1 4 1 2 7 4 9 1 5 3 6 1 1 (Right)

How many such odd digits are there each of which is immediately preceded by an even digit and also immediately followed by an odd digit?

A statement is given followed by two arguments I and II. Read the statement and the arguments carefully and select the appropriate answer from the given options.

Statement:

Students have complained that questions outside the prescribed syllabus were asked in the X standard board exams this year.

Arguments:

I The pass percentage in the X standard board exams has declined by 8 percent this year.

II. The number of students scoring over 60 percent in the X standard board exams has shown an increase of 15 per cent this year.

If each vowel in the word DUSTER is changed to the letter following it in the English alphabetical order and each consonant is changed to the letter preceding it in the English alphabetical order, how many letters will appear twice in the group of letters thus formed?

In this question, a group of numbers/symbols is coded using letters as per the table given below and the conditions which follow. The correct combination of codes following the condition is your answer.

Number/Symbol

^

#

5

7

@

%

>

2

!

?

4

8

$

3

Letter Code

L

F

B

J

D

H

E

X

V

Z

K

U

R

P


Conditions:

(i) If the first element is a symbol and the last, a number, the codes for these two are to be interchanged.

(ii) If the first element is an odd number, then the first and last elements are to be coded as Ø and ¥, respectively.

(iii) If both second and third elements are perfect squares, the third element is to be coded as the code for the second element.

How will ‘7 # ^ 2 !’ be coded?