GSM and Bluetooth modules on 1 Arduino Uno board I couldn't find anything on this topic.

Task: to connect sensors to Arduino board via Bluetooth module, process the received data and then send the data to server via GSM module. 

Question: Is it possible to connect both of these modules to 1 Arduino board? If I'm not wrong, Arduino Uno has only one pair of Rx Tx pins, while for these two modules each has its own pairs on Rx Tx pins.

I need to know this before ordering them. So, please help
Take a look at the SoftwareSerial library which allows other pins to be used for Serial at speeds &lt;= 57600

https://www.arduino.cc/en/Reference/SoftwareSerial