-1
4
1
5
Correct answer is C
x \(\ast\) y = xy - y - x, x \(\ast\) 3 = 3x - 3 - x = 2x - 3
2 \(\ast\) x = 2x - x - 2 = x - 2
∴ 2x - 3 = x - 2
x = -2 + 3
= 1
Find the radius of a sphere whose surface area is 154 cm\(^2\)? ...
Find the median of the following set of numbers: 28, 29, 39, 38, 33, 37, 26, 20, 15, 25 ...
Solve the inequality: \(\frac{-m}{2} - \frac{5}{4} \geq \frac{5m}{12} - \frac{7}{6}\)...
What is the value of m in the diagram? ...
Two lines PQ and ST intersect at 75°. The locus of points equidistant from PQ and ST lies on the...