A) 39
B) 49
C) 59
D) 69
Correct Answer: D
Solution :
We know, \[{{(42)}^{2}}=1764\] and \[{{(43)}^{2}}=1849\] Since, 1764<1780< 1849 Hence, the smallest number that must be added to 1780 is \[(1849-1780),\]i.e., 69.
You need to login to perform this action.
You will be redirected in
3 sec
