How can I say this questions in HINDI???
How are u??? (explain what is how and are)

How old are u ???(explain what is old)

What´s your name ? (explain what is your , is and name)

Where are u from??? ( explain what is where and from)

Question

How can I say this questions in HINDI???
How are u??? (explain what is how and are)

How old are u ???(explain what is old)

What´s your name ? (explain what is your , is and name)

Where are u from??? ( explain what is where and from)

Answer

How are u? - aap kaisey hain ?(with repect) and with frnds and younger than you - tum kaisey ho ?
how = kaisey. You = tum or Aap. " are " can't be defined as a single word in hindi.
How old are u ???(explain what is old)
Aap ka umar kya hai ? or Aap kitney saal ke ho ? old means - purana but not used in sentence while asking this question.
What´s your name ? (explain what is your , is and name)
aapka naam kya hai ? your = aapka or tumhara & is = hai & name = naam.
Where are u from??? ( explain what is where and from)
aap/tum kahan se ho ? where = kahan & from = se.

Answer

Jimmy ne bahut sahi jawab diye hai. 
Mr. Jimmy has answered it correctly. 
Nothing much to comment on.

Answer

aap kaise ho?
aapki umar kya hai?
aapka naam kya hai?
aap kaha se ho?

Answer

tum kese ho      how mean kete            you mean tum

Answer

Mr.Jimmy is exactly right........

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