ELDER BROTHER IS COMING WITH HIS LEGS WIDE APA RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

Zero. If read to grammatical perfection, the riddle uses the word 'had' in a pas-tense format which means he no longer has children.

Therefore all of the daughters and brothers could be from a prior marriage, affair etc. Although, again, the riddle doesn't not specify that the brothers are 'step brothers.' Did you answer this riddle correctly?
YES  NO  

There are 10 legs under the table in total. We have a grandmother (a mother), her daughter (both a mother and a daughter) and her granddaughter (a daughter and granddaughter) hence how we have the number of mothers and daughters sat around the table. Did you answer this riddle correctly?
YES  NO  

Six legs are on the floor. Did you answer this riddle correctly?
YES  NO  

The correct answer is the chair. The chair has legs but it cannot walk, the chair has arms but it cannot be reached but still, they are strong. Did you answer this riddle correctly?
YES  NO  

Seven (DAD + MOM + FOUR DAUGHTERS + 1 SON) Did you answer this riddle correctly?
YES  NO  

There are nine Mustards in the family. Since each daughter shares the same brother, there are six girls, one boy and Mr. and Mrs. Mustard. Did you answer this riddle correctly?
YES  NO  

Mary has four daughters. Let x be the daughter.
Four daughters mean - x + x + x + x
Each of her daughters has one brother - let y be the son.
Total children => x + x + x + x + y. => 5
She has Total 5 children, all of her daughters have the same 1 brother. Did you answer this riddle correctly?
YES  NO