Question

55679 / Unit-III 3. निम्नलिखित आंकड़ों से माध्य, माध्य विचलन तथा इसका माध्य विचलन गुणांक ज्ञात कीजिए : अंक आवृत्ति 25-30 18 30-35 27 35-40 39 40-45 42 45-50 33 50-55 21​

Answer 1

Time travel is the concept of movement between certain points in time, analogous to movement between different points in space by an object or a person, typically with the use of a hypothetical device known as a time machine. ... It is uncertain if time travel to the past is physically possible

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