implement using 1 nand and 1 nor gate: y = abc'

To implement the function y = abc', you can use the following circuit with 1 NAND gate and 1 NOR gate:

```
_______
a ---| |
| NAND|-----| |
c' ---|_______| | NOR |---- y
|_______|

b -----------------------|
```

In this circuit:
- The NAND gate takes inputs a and c' and produces the output of a AND NOT c'.
- The NOR gate takes the output of the NAND gate and input b and produces the final output of y = abc'.