Gracie went for a morning walk and met her old friend Suzie and her
daughter Jennie after a long time. Gracie asked Suzie how old is Jennie
to which Jennie replied “In two years I will be twice as old as I was
three years ago”. How old is Jennie?
Can you make 100 out of the sequence of non-zero digits 987654321 in
order by placing plus or minus signs between them. The result of thus
described arithmetic operation will be 100.