Latest NDA Aptitude Question SOLUTION: The phenomenon of radioactivity was discovered by -
(a) Marie Curie (b) Pierre Curie (c) Henri Becquerel (d) J. J. Thomson
The person who can solve mathematical problems,can lead life easily ,Maths tellu that every problem as solution...we can find number of solutions for one problem ...Aplly it in the life also we can lead our life happily...