alleryStart learning →How many terms does the progression 5, 10, 15, ..., 100 have?
- 19
- 20
- 21
- 18
Show answer and solution
Correct answer: B. 20
The terms are 5 x 1 up to 5 x 20, so there are 20 of them.
SSC CGL Integer Sequence — practice questions — page 2
Explore 46 free Integer Sequence questions in SSC CGL Reasoning. Open each question or exercise to read its content, reference answers and available explanation.
Practise Integer Sequence with Quill →Integer Sequence questions and exercises with answers
Showing questions 31–46 of 46.
How many terms does the progression 5, 10, 15, ..., 100 have?Read the answer and worked solution →Three numbers are in arithmetic progression, with the first 7 and the last 19. What is the middle one?Read the answer and worked solution →A geometric progression has ratio 2 and third term 12. What is its first term?Read the answer and worked solution →Which of these lists is a geometric progression?Read the answer and worked solution →A rule that gives the nth term directly by a formula is what kind of definition?Read the answer and worked solution →Defining each term from earlier terms, as Fibonacci numbers do, is what kind of description?Read the answer and worked solution →A sequence in which every positive integer is a sum of distinct terms is called what?Read the answer and worked solution →The perfect numbers form an integer sequence defined by what?Read the answer and worked solution →Fibonacci numbers show up in biology in which feature of plants?Read the answer and worked solution →Which computer data structure is named after the Fibonacci numbers?Read the answer and worked solution →Using long (2 units) and short (1 unit) syllables, how many patterns fill 4 units?Read the answer and worked solution →What is the 15th square number?Read the answer and worked solution →What is the smallest prime greater than 50?Read the answer and worked solution →How many primes lie between 1 and 20?Read the answer and worked solution →Which pair is a twin prime pair?Read the answer and worked solution →By Brun's theorem, the sum of reciprocals of all twin primes is what?Read the answer and worked solution →
Worked practice questions
Three numbers are in arithmetic progression, with the first 7 and the last 19. What is the middle one?
- 11
- 14
- 12
- 13
Show answer and solution
Correct answer: D. 13
The middle term of three in arithmetic progression is the average of the ends, (7 + 19) / 2 = 13.
A geometric progression has ratio 2 and third term 12. What is its first term?
- 3
- 2
- 6
- 4
Show answer and solution
Correct answer: A. 3
The third term is the first times 2 squared, so the first term is 12 / 4 = 3.
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