332
73
53
516
Correct answer is D
Pr. (winning 100m race) = 18
Pr. (losing 100m race) = 1 - 18 = 78
Pr. (winning high jump) = 14
Pr. (losing high jump ) = 1 - 14 = 34
Pr. (winning only one) = Pr. (Winning 100m race and losing high jump) or Pr.(Losing 100m race and winning high jump)
= (18×34) + (78×14)
= 332+732
= 1032
= 516
Simplify √160r2+√71r4+√100r8...
For what value(s) of x is the expression (x2 + 15x + 50) ÷ (x - 5) not defined...
In the diagram, HK is parallel to QR, PH = 4cm and HQ = 3cm. What is the ratio of KR:PR? ...
If x varies inversely as the cube root of y and x = 1 when y = 8, find y when x = 3 ...
In the parallelogram PQRS, PE is perpendicular to QR. Find the area of the parallelogram. ...
In the diagram above, O is the center of the circle. If ∠POR = 114o, calculate ∠PQR ...
Find the volume of the prism ...
The root of a quadratic equation in x, are -m and 2n. Find the equation ...
Find the 9th term of the arithmetic progression 18, 12, 6, 0, -6 ......... ...
Given that 2x + y = 7 and 3x - 2y = 3, by how much is 7x greater than 10? ...