If √7=2.646 then 1√7 = ?
(a) 0.375
(b) 0.378
(c) 0.441
(d) None of these
√7=2.6461√7=√77=2.6467=0.378
Hence, the correct answer is the option (b)
(−37)−1=?
(a) 73
(b) −73
(c) 37
(d) none of these