Keeping Your Number Secret

[AB Editor]

You need to check that your friend, Bob, has your correct phone number, but you cannot ask him directly.

You must write a the question on a card which and give it to Eve who will take the card to Bob and return the answer to you.

What must you write on the card, besides the question, to ensure Bob can encode the message so that Eve cannot read your phone number?

[dr b]

"call me".

[Barmaid]

Phone me

[Acrosticus]

If you add my phone number to yours, what do you get?

[weecalf]

You phone will ring at 3 0clock dont answer it .Ring 1471.That way you will get my number .By the way how did England do against Germany on Sunday

[jayg]

So whats the answer?