Why are glyosidic linkage of glucose and fructose rings often occurring at the 1' and 4' prime positions?

Here are some example combinations from my textbook:


[![enter image description here](https://i.stack.imgur.com/E13bM.png)](https://i.stack.imgur.com/E13bM.png)


[![enter image description here](https://i.stack.imgur.com/yWhuV.png)](https://i.stack.imgur.com/yWhuV.png)


In all of these combined products, the reactive centres seem to be the carbon at first position/ fourth position from the oxygen in priority. Is there something deep going on here?




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[Source: NCERT Class 12](https://ncert.nic.in/textbook/pdf/lech205.pdf)


