Q.5 Find the least number which must be added to each of the following numbers so as to get a perfect square. Also find the square root of the perfect square so obtained.
(i) 525
(ii) 1750
(iii) 252
(iv) 1825
(v) 6412
(i) 525:-
It is clearly visible that if we add 4 to the given number, the remainder will become zero. So obtained number is 529 and its square root is 23.
(ii) 1750:-
It is clearly visible that if we add 14 to the given number, the remainder will become zero. So the obtained number is 1764 and its square root is 42.
(iii) 252:-
It is clearly visible that if we add 4 to the given number, the remainder will become zero. So the obtained number is 256 and its square root is 16.
(iv) 1825:-
It is clearly visible that if we add 24 to the given number, the remainder will become zero. So the obtained number is 1849 and its square root is 43.
(v) 6412:-
It is clearly visible that if we add 149 to the given number, the remainder will become zero. So the obtained number is 6561 and its square root is 81.