Saturday Mac riddles 216

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

1: Pictograms from Japan accepted into Unicode in 2009-10.

2: Five went into education from 2002, but left three years later.

3: Irrational number of pals was first with integral keyboard and ARM.

To help you cross-check your solutions, 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.