Mary 's mum has 4 children . 1st child 's name is April , 2nd child 's name is May , 3rd child 's name is June . Then what is the name of the 4th child ?
Is a child gifted if he/she can solve 150-piece puzzle at age 3 and 300-piece puzzle at age 4 ? If not , what is the minimum no . of pieces to be gifted ?