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

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    A We can ask BOB "that we have organised a surprise party for EVE tonight ..... so dont tell EVE about this and give me your response ASAP....."

    Thus if BOB has the right number he will call me immediately otherwise will conatact me personally...............


    Smiley

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    P Ask Bob to "call me"

    CpjJwWHV   but how can bob call u when its not sure whether he has your correct phone number
    14 years ago

    Smiley
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