Calculator Techniques

In a class of 60 students, 43 like calculus, 38 like geometry, how many students like both subjects?

• 20

• 21

• 22

• 23

• 5302732

• 3253027

• 4350278

• 6534297

Given the ff functions:
f(x) = 2x+3

g(x) = 3x+2

Evaluate: f(g(x))

• 6x + 11

• 6x + 7

• 11x + 6

• 7x + 6

A class of students took examination in Math, Elecs and Comms. 50 passed Math, 48 passed Elecs and 42 passed Comms. 28 passed Math and Elecs, 20 passed Elecs and Comms, while 22 passed Math and Comms. If 15 passed all subjects how many students were there?

• 80

• 90

• 85

• 95

• 2.5

• 5.5

• 7.5

• 9.5

How many distinct elements/arrangements can be formed using all the letters of STATISTICS?

• 30400

• 40500

• 50400

• 60500

In each of 4 races, the democrats have 60% chance of winning. Assuming that the races are independent of each other, what is the probability that the democrat won at least 2 races?

• 0.7208

• 0.8208

• 0.9208

• 0.6208

Vehicles pass through a junction on a busy road at an average rate of 300 per hour. Find the probability that at most 5 cars passes in a given minute.

• 0.3

• 0.4

• 0.5

• 0.6