Saturday Mac riddles 307

Here are this weekend’s Mac riddles to entertain you through family time, shopping and recreation.

1: Workshop exhibition with thunder and lightning from the A13 in 68.58 cm.

2: First person seed vessel contact takes music wherever.

3: Notes of brief communication from a pioneering mathematician.

To help you cross-check your solutions, or confuse you further, there’s a common factor between them.

I’ll post my solutions first thing on Monday morning.

Please don’t post your solutions as comments here: it spoils it for others.