Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

In the Mexico City area, there are two Houses H1 and H2. Both H1 and H2 have two children each.
In House H1, The boy plays for Mexico Youth academy and the other child plays baseball.
In House H2, The boy Plays soccer for his school in Mexico and they recently have a newborn.

Can you prove that the probability of House-H1 having a girl child is more than that of House-H2?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Can you solve this picture maths equation?

What is always in front of you but can’t be seen?

John was gifted a new Hayabusa. He drove x miles at 55mph. Then he drove x+20 miles at 40mps. He drove his bike for 100 minutes. How much distance did he travel?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

What came first, the chicken or the egg?

Can you spot the man between the coffee bean in the picture below ?

Can you find the thief by just looking at the picture below?