Can someone help me with these problems? Looking for absolute and relative uncertainty and relative tolerance

1. Calculate the total resistance with uncertainty estimation, if the following resistors are R1= 10 k 5% and R2= 2.2 k 10% are connected in series.

2 Calculate the total resistance with uncertainty estimation, if the following resistors R1= 6.8 k 5% and R2= 2.7 k 5% are connected in parallel.

In a circuit, voltage across a resistor is measured as 1.02V with uncertainty of 0.002V and current is measured as 0.00345A with uncertainty of 0.00035A. Calculate the resistance value of the resistor with uncertainty.

In a certain circuit current flowing through a resistor 330 k 5% is measured as 0.01515 A with uncertainty of 0.0000144A. Calculate the voltage drop across the resistor with uncertainty.