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11 Plus Number Sequence

11 Plus Number Sequence

 Number sequence or Number series is considered one of the most important subjects in many competitive exams globally. It is the sequence of numbers that follows a peculiar pattern, and a number in that sequence will be missing, and it must be identified. It is very easy to answer these questions if the pattern is identified.

Let’s have a glance at it by observing an example problem.


 Find the missing number in the following sequence.

                        1, 3, 5, 7 … 11, 13


On observing the sequence keenly, it is clear that it is a sequence of odd numbers. It is easy to identify the missing number as the pattern is identified, so the answer is 9.

Generally, the patterns include

  • A sequence of Prime numbers
  • A series of Even Numbers
  • A series of Odd Numbers
  • A sequence in which there is a fixed increment or decrement like +2, +3 or  -4, etc
  • A series with some multiplication factors like x2, x6, or /7, /5 etc.
  • A sequence may contain squares of numbers.
  • A sequence may contain cubes of numbers.

Examples on 11 plus number sequence:


Find the missing number in the following sequence.

                        1, 4, 9 … 25, 36


On observing the sequence keenly, it is clear that it is a sequence of squares of numbers. It is easy to identify the missing number as a pattern is identified, so the answer is 16.


Find the missing number in the following sequence.

                        1, 4, 7, 10 … 16, 19


Observing the sequence keenly makes it clear that there is an increment of + 3 every time in this sequence. So the missing number 13.




11 Plus Number Sequence

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There are many 11 Plus practice papers for entrance exams, Independent school papers and more for the 11 tests. Ranging from 10 to 25 minutes, our multiple-choice and fill-up question types are ideal for English revision.

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