What is the meaning of "to not know the first thing about something"?

Meaning: Understand that ION is a slang term used as a short form for “I don't” or “I don't know.” Appropriateness: Consider the context and tone of your ... Definition: Let me know: Keep me informed, tell me. idiom: UK US Let me know by phone or email if you want me to come and pick you up. ... know Fubini. 15.2: I am going to write \int_a^b \int_u(x)^v(x) F(x,y)dy dx ... meaning of "smooth". Know how to find area of surfaces, especially of a ... Dec 13, 2014 ... "I don't know you" = I do not understand what sort of person you are." or "I will ignore you and everything you do." depending on context. Jun 14, 2011 ... "know about" means that I have heard many things about this person, or have researched him (such as if I were to say "I know about Einstein, he invented ... Mar 2, 2021 ... What Does it Mean to “Be Still and Know”? We all face moments when our world spins and our hearts race. Being still is the last thing we feel. Dave, let's get out of this abandoned house, dump the gun in the river, be more than the characters in bedtime stories meant to scare the children straight. Jan 13, 2015 ... Study suggests some men don't know meaning of 'rape' ... A recent study from “Violence and Gender” found that nearly 32 percent of college male ... An entity will be treated as knowing or having reason to know for section 4965 purposes if one or more of its entity managers knew or had reason to know that ... Oct 27, 2017 ... Guest host David Kestenbaum talks to producer Diane Wu about a list she keeps of things she means to know.