What is the probability that an integer x,(1 ≤ x \...
What is the probability that an integer x,(1 ≤ x ≤ 20) chosen at random is divisible by both 2 and 3?
1/20
1/3
3/20
7/10
Correct answer is C
U = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20}
A = {x/x is divisible by 2}
A = {2,4,6,8,10,12,14,16,18,20}
B = {x/x is divisible by 3}
A ∩ B = {6, 12, 18}
P(Number divisible by both 2 and 3)
= 3/20
If tan x = 1, evaluate sin x + cos x, leaving your answer in the surd form ...
A die is rolled 200 times the outcomes obtained are shown in the table below. Find the probabilit...
If the hypotenuse of a right-angled isosceles triangle is 2cm. What is the area of the triangle...
If 2 log x (338) = 6, find the value of x...
In △PQR, PQ = 10cm, QR = 8cm and RP = 6cm, the perpendicular RS is drawn from R to ...
Find the coefficient of xy in the expansion of (x - 4y)(3x + 2y) ...