Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

What work can one never finish?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

What is harder to catch the faster you run?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

What four weights can be used to balance from 1 to 30 pounds?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?