Answering skills of digital reasoning questions in bank recruitment examination

The so-called numerical reasoning is to give candidates a series, but at least one is missing. Candidates are required to carefully observe the arrangement law of the series, and then choose the most reasonable one from the four options to fill in the blanks. Doing numerical reasoning problems requires not only quick response, but also certain accumulation, mastering the law of sequence of common exams, and appropriate methods and skills.

There are arithmetic progression, geometric progression, sum series, product series, multilevel series, fractional series, recursive series, power series, multiple series and so on. In this article, we will discuss multiple series. A multiple sequence refers to a sequence with more than 7 items in an exponential column. Therefore, if there are many items in a series or two brackets appear, consider multiple series. Multi-series can be subdivided into cross series and grouping series.

First, the crossover sequence

Cross-series means that in a series, odd terms and even terms are regular respectively. Looking at cross-series bank recruitment questions, the odd and even items in the general series will be very different, such as 3, 29, 5, 26, 7, 23, 9, (). Obviously, the odd-numbered items are smaller and the even-numbered items are larger.

Example 1(20 19- Agricultural Bank of China)15,36, 19,33,23,30,27, ().

A.2 1

b27

C. 17

Cao 29

Answer B. Analysis: There are many projects in the series, so consider multiple series. Look at odd and even terms after crossing. Odd columns are: 15, 19, 23, 27, and the arithmetic increment is 4. Even number sequence is: 36, 33, 30, (), arithmetically decreasing, and the tolerance is 3,30-3 = 27. Therefore, choose option B.

Second, the grouping order

Grouping series refers to grouping the numbers in the series, and then performing operations such as addition, subtraction, multiplication and division in each group, showing a certain regular series. Usually, the total number of items is even, so choose to group in pairs; The total number of items is odd. Select three or three groups. For example, 1, -2, 5, -6,-1, 0, 9, () are grouped in pairs, and it is found that the number of each group is-1, so 9+(- 10)=- 1.

Example 2(20 18- Pufa) 3, 5, 3, 5, 7, 5, 7, (), 7

A.8

B.9

C. 10

D. 1 1

Answer B. Analysis: There are many series items, which are grouped first, with 9 items * * *, and three or three groups are considered; (3, 5, 3), (5, 7, 5), (7, 9, 7), that is, the difference between the middle term and the left and right quantity terms is 2, so this term is 7+2=9, so the answer is B.

Third, multiple series deformation.

In addition to the conventional multiple series mentioned above, we will also encounter some series with operation symbols or decimal points. According to the problem-solving skills of multiple series, we can still find out their corresponding laws by crossing or grouping. Although the topic of bank recruitment examination is not common, this form still needs to be understood and mastered.

For example: 3 1+2, 2+4, 3+6, 1+8, 2+ 10, 3+ 12, ()

A.3+ 14

1+ 14

C2+6

D. 1+24

Answer B. Analysis: Observe the order, each item has a plus sign. Consider the plus sign as the boundary, and the numbers to the left of the plus sign form a sequence: 1, 2, 3, 1, 2, 3, which is a cyclic sequence; The numbers to the right of the plus sign form a series: 2, 4, 6, 8, 10, 12, which is arithmetic progression with a tolerance of 2. So the unknown item should be 1+ 14. Select option B.

After the training of real questions, I believe that everyone must have mastered the digital reasoning questions, and I hope that all candidates can get good grades in the exam. Bian Xiao will keep updating more about the skills of preparing for bank recruitment, preparing for dry goods and news information.