A. 508.268
B. 416.59
C. 425.28
D. 68.508
E. None of these
74.2% of 7685.4 +?% of 5546.8 = 6750
54.35 × 39.87 ÷ 13.35 =?
If x=√3+1/√3-1and y=√3-1/√3+1,then the value of (x2 + y2) is:
(94)2 + (?)2 = (145)2- (56)2- 3869