Question

URGENT!!!!
Please can someone explain the question or rather the use of that s?ign

Answer 1

Here are synonyms for politely communicating urgency without writing "ASAP" or "as soon as possible." I apologize for the urgency, but could you please [do X, send me Y, complete Z] at your soonest possible convenience?” This politely worded question communicates the same level of urgency as “ASAP” but in a far more considerate way.

Explanation:

Ok this is the right answer have a good Day!!!

Answer 2

Below

Explanation:

Symmetric difference sign : A U B / A ∩ B

= { a b c d e f } / {c d } = { a b e f }