4x4 square and two other squares.

How to use:

① Exclusion method

Exclude some irrelevant problems first, determine the determinable problems first, and narrow the unknown range as much as possible, so as to facilitate the analysis and solution of the problems. This way of thinking is very useful in our work and life.

② Recursive method

Through the layer-by-layer analysis of the known conditions, each step can be ensured to be accurate. There may be several "branches", so we should start with a simple one based on the principle of easy before difficult.

③ Inverse deduction method

Start with the final result of the question and advance step by step until you find the answer to the question. Some problems are easy to solve in this way, but difficult to solve in other ways.

Intelligence problem is a kind of ability problem. The topic can examine the respondent's attention, observation, logical thinking, imagination and memory in any form. The topic is reasonable, informative and entertaining, and the form of the topic is not limited. The application of intelligence questions has become more and more extensive, and many companies regard it as an interview topic, and there are similar questions in the civil service examination.