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Home Logical Reasoning Number Series See What Others Are Saying!
  • Question
  • Look at this series: 21, 9, 21, 11, 21, 13, 21, ... What number should come next?


  • Options
  • A. 14
  • B. 15
  • C. 21
  • D. 23

  • Correct Answer
  • 15 

    Explanation
    In this alternating repetition series, the random number 21 is interpolated every other number into an otherwise simple addition series that increases by 2, beginning with the number 9.

  • More questions

    • 1. Statements: Video libraries are flourishing very much these days.

      Conclusions:

      1. People in general have got a video craze.
      2. It is much cheaper to see as many movies as one likes on videos rather than going to the cinema hall.


    • Options
    • A. Only conclusion I follows
    • B. Only conclusion II follows
    • C. Either I or II follows
    • D. Neither I nor II follows
    • E. Both I and II follow
    • Discuss
    • 2. Statements: Some books are pens. No pen is pencil.

      Conclusions:

      1. Some books are pencils.
      2. No book is pencil.


    • Options
    • A. Only conclusion I follows
    • B. Only conclusion II follows
    • C. Either I or II follows
    • D. Neither I nor II follows
    • E. Both I and II follow
    • Discuss
    • 3. Look at this series: 8, 6, 9, 23, 87 , ... What number should come next?

    • Options
    • A. 128
    • B. 226
    • C. 324
    • D. 429
    • Discuss
    • 4. The data given by the U.S. Labour Ministry indicate that till the year 2000, there will be a shortage of 1,00,000 programmers. A spokesman from the industry said, "We should understand this thoroughly America needs Indian programmers. This is not only the question of investment but also of the talent with which the Indian programmers are equipped".

    • Options
    • A. In other sectors also, there will be shortage of the talented labour till the year 2000.
    • B. Indian programmers are the most talented in the world.
    • C. Indian programmers are available on comparatively less salary in comparison to the programmers from other countries.
    • D. In spite of entering with huge capital in the Software Training, U.S. could not be able to meet its own needs fully.
    • E. The Indian software market is well equipped to send programmes to other countries.
    • Discuss
    • 5. An Informal Gathering occurs when a group of people get together in a casual, relaxed manner. Which situation below is the best example of an Informal Gathering?

    • Options
    • A. The book club meets on the first Thursday evening of every month.
    • B. After finding out about his promotion, Jeremy and a few coworkers decide to go out for a quick drink after work.
    • C. Mary sends out 25 invitations for the bridal shower she is giving for her sister.
    • D. Whenever she eats at the Mexican restaurant, Clara seems to run into Peter.
    • Discuss
    • 6. A Tiebreaker is an additional contest or period of play designed to establish a winner among tied contestants. Which situation below is the best example of a Tiebreaker?

    • Options
    • A. At halftime, the score is tied at 28.
    • B. Mary and Megan have each scored three goals in the game.
    • C. The referee tosses a coin to decide which team will have possession of the ball first.
    • D. The Sharks and the Bears each finished with 14 points, and they are now battling it out in a five-minute overtime.
    • Discuss
    • 7. dimension

    • Options
    • A. compass
    • B. ruler
    • C. inch
    • D. measure
    • Discuss
    • 8. Here are some words translated from an artificial language.
      jalkamofti means happy birthday
      moftihoze means birthday party
      mentogunn means goodness
      Which word could mean "happiness"?

    • Options
    • A. jalkagunn
    • B. mentohoze
    • C. moftihoze
    • D. hozemento
    • Discuss
    • 9. Four people witnessed a mugging. Each gave a different description of the mugger. Which description is probably right?

    • Options
    • A. He was average height, thin, and middle-aged.
    • B. He was tall, thin, and middle-aged.
    • C. He was tall, thin, and young.
    • D. He was tall, of average weight, and middle-aged.
    • Discuss
    • 10. swimming

    • Options
    • A. pool
    • B. bathing suit
    • C. water
    • D. life jacket
    • Discuss


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