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সংখ্যার নিম্নলিখিত ক্রম বিবেচনা করুন:
5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6

উপরোক্ত ক্রমানুসারে একটি বিজোড় সংখ্যার পরে কতটি বিজোড় সংখ্যা আছে?

This question was previously asked in
Official UPSC Civil Services Exam 2020 Prelims Part B
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  1. 5
  2. 6
  3. 7
  4. 8

Answer (Detailed Solution Below)

Option 2 : 6
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Detailed Solution

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যে সংখ্যা 2 দ্বারা বিভাজ্য নয় তারা বিজোড় সংখ্যা।

প্রদত্ত সংখ্যার ক্রম হল:

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

(5,1) (7,3) (3,9) (5,7) (3,1) (1,5)

সুতরাং, 6 সঠিক উত্তর।

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Exams Tests Super Practice

More Number Arrangement Questions

Q1.How many even numbers are there in the sequence which are immediately followed by an odd number? 4 6 7 8 3 3 4 5 7 6 8 9 2 7 9 1 3 5 2
Q2.How many such 9s are there in the following number sequence which are immediately preceded by 5? 7 9 6 9 5 9 8 4 7 9 5 7 4 5 9 2 3 7 9 1 2 7 5 9 7 7
Q3.Refer to the following series and answer the question (all numbers are single digit numbers only). (Left) 6 2 1 3 7 6 9 7 4 3 5 2 3 4 3 4 2 3 1 5 7 9 5 8 5 7 5 (Right) How many such even digits are there each of which is immediately preceded by an even digit and also immediately followed by an odd digit?
Q4.This question is based on the five, three-digit numbers given below. (Left) 721 145 342 372 547 (Right) (Example- 697 – First digit = 6, second digit = 9 and third digit = 7) (NOTE: All operations to be done from left to right.) If all the numbers are arranged in descending order, the position(s) of how many numbers will remain unchanged?
Q5.This question is based on the five, three-digit numbers given below. (Left) 842 234 371 723 463 (Right) (Example- 697 – First digit = 6, second digit = 9 and third digit = 7) (NOTE: All operations to be done from left to right.) What will be the resultant if the third digit of the highest number is added to the second digit of the lowest number?
Q6.Answer the question asked keeping in mind the following series. Numbering should be from left to right only. (All numbers are single digit numbers) (Left) 2 5 3 1 1 8 1 7 9 9 4 8 2 7 5 0 5 7 5 3 7 0 5 8 3 4 2 4 8 1 (Right) How many odd numbers are there, each of which is immediately preceded by an odd number and followed by an even number?
Q7.Answer the question given keeping in mind the sequence given below. The numbering should be from left to right only. (All numbers are single-digit numbers)  (Left) 2 2 8 5 0 7 9 7 9 7 2 4 2 9 4 3 0 0 3 7 8 7 8 5 5 1 8 1 0 (Right) How many such even digits are there, each of which is immediately preceded by an odd digit and immediately followed by an odd digit?
Q8.This question is based on the five, three-digit numbers given below. (Left) 164 253 927 834 519 (Right) (Example- 697 - First digit = 6, second digit = 9 and third digit = 7) NOTE: All operations to be done from left to right. If 2 is added to second digit of every number, in how many numbers will the second digit be exactly divisible by the first digit?
Q9.This question is based on the five, three-digit numbers given below. (Left) 354 756 423 635 679 (Right) (Example- 697 – First digit = 6, second digit = 9 and third digit = 7) (NOTE: All operations to be done from left to right.) If 2 is added to the first digit of every number, in how many numbers will the first digit be exactly divisible by the second digit? 
Q10.Refer to the following series and answer the question (all numbers are single digit numbers only). (Left) 4 2 1 5 7 9 8 7 3 4 3 5 6 2 1 5 1 5 2 8 5 6 9 7 4 7 3 (Right) How many such odd digits are there each of which is immediately preceded by an odd digit and also immediately followed by an even digit?

More Arrangement and Pattern Questions

Q1.If it is possible to make only one four-letter meaningful word with the first, third, fourth, and eighth letter of the word ‘ABNORMALITY’, which could be the second letter of the word from the left end? If more than one such word can be formed, give ‘X’ as the answer. If no such word can be formed, give ‘Z’ as your answer.
Q2.If in the word BEAUTICIAN, all the consonants are replaced by the previous letter in the alphabet and all the vowels are replaced by the next letter, then all the letters are arranged in the alphabetical order. Then which letter will be fourth from the right end?
Q3.How many even numbers are there in the sequence which are immediately followed by an odd number? 4 6 7 8 3 3 4 5 7 6 8 9 2 7 9 1 3 5 2
Q4.If the first half of the word AUTOMOBILE is reversed, which of the following will be the fourth to the right of the third letter from the left end? 
Q5.How many such 9s are there in the following number sequence which are immediately preceded by 5? 7 9 6 9 5 9 8 4 7 9 5 7 4 5 9 2 3 7 9 1 2 7 5 9 7 7
Q6.Which of the following letters in the English alphabet series is as far from H as U is from N?
Q7.If in the word AFFECTIONATE, all the consonants are replaced by the next letter in the alphabet and all the vowels are replaced by the previous letter, then all the letters are arranged alphabetically, which  will be the fifth letter from the left?
Q8.Suppose the first and the second letters of the word INCOMPREHENSIBLE changed places, also the third and the fourth, the fifth and the sixth, and so on. In the new word, thus formed, which letter would be 10th from the left?
Q9.Refer to the following number, symbol series and answer the question. Counting to be done from left to right only.   (Left) # % 5 4 3 2 1 @ % * # * 6 § 9 8 % $ 1 5 6 4 2 (Right) How many such numbers are there each of which is immediately preceded by a symbol and also immediately followed by another symbol?

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More Logical Reasoning Questions

Q1.If it is possible to make only one four-letter meaningful word with the first, third, fourth, and eighth letter of the word ‘ABNORMALITY’, which could be the second letter of the word from the left end? If more than one such word can be formed, give ‘X’ as the answer. If no such word can be formed, give ‘Z’ as your answer.
Q2.How many boys are there between Q and T?
Q3.How many boys are lighter than U?
Q4.Find the next number in the series. 6, 12, 18, 36, 54, 108, ?
Q5.Find the next number in the series. 24, 36, 60, 84, 132, 156, ?
Q6.Find the odd image out in the given series.
Q7.How many squares are there in the given figure?
Q8.A man starts from point A and walks 5km towards East. He turns right and walks 4km; turns right again and walks 3km. He then takes another right and walks 6km. He walks 6km towards East; turns right and walks 2km and turns left and walks 1km to reach B. How far is A from B?
Q9.Replace the question mark with an option that follows the same logic applied in the first pair. 29 : 18 :: 39 : ?
Q10.A girl is facing North direction. If she turns 59 degrees in clockwise direction and 31 degrees in the same direction, which direction will she face now?
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