ASVAB Arithmetic Reasoning Practice Test 392798 Results

Your Results Global Average
Questions 5 5
Correct 0 2.82
Score 0% 56%

Review

1

What is \( \frac{8x^9}{6x^3} \)?

60% Answer Correctly
1\(\frac{1}{3}\)x12
1\(\frac{1}{3}\)x6
1\(\frac{1}{3}\)x3
\(\frac{3}{4}\)x6

Solution

To divide terms with exponents, the base of both exponents must be the same. In this case they are so divide the coefficients and subtract the exponents:

\( \frac{8x^9}{6x^3} \)
\( \frac{8}{6} \) x(9 - 3)
1\(\frac{1}{3}\)x6


2

A machine in a factory has an error rate of 2 parts per 100. The machine normally runs 24 hours a day and produces 6 parts per hour. Yesterday the machine was shut down for 2 hours for maintenance.

How many error-free parts did the machine produce yesterday?

49% Answer Correctly
129.4
166.6
126.7
110.4

Solution

The hourly error rate for this machine is the error rate in parts per 100 multiplied by the number of parts produced per hour:

\( \frac{2}{100} \) x 6 = \( \frac{2 \times 6}{100} \) = \( \frac{12}{100} \) = 0.12 errors per hour

So, in an average hour, the machine will produce 6 - 0.12 = 5.88 error free parts.

The machine ran for 24 - 2 = 22 hours yesterday so you would expect that 22 x 5.88 = 129.4 error free parts were produced yesterday.


3

Which of the following statements about exponents is false?

47% Answer Correctly

b0 = 1

b1 = b

b1 = 1

all of these are false


Solution

A number with an exponent (be) consists of a base (b) raised to a power (e). The exponent indicates the number of times that the base is multiplied by itself. A base with an exponent of 1 equals the base (b1 = b) and a base with an exponent of 0 equals 1 ( (b0 = 1).


4

If there were a total of 250 raffle tickets sold and you bought 12 tickets, what's the probability that you'll win the raffle?

60% Answer Correctly
16%
2%
10%
5%

Solution

You have 12 out of the total of 250 raffle tickets sold so you have a (\( \frac{12}{250} \)) x 100 = \( \frac{12 \times 100}{250} \) = \( \frac{1200}{250} \) = 5% chance to win the raffle.


5

What is the next number in this sequence: 1, 5, 13, 25, 41, __________ ?

69% Answer Correctly
61
55
58
52

Solution

The equation for this sequence is:

an = an-1 + 4(n - 1)

where n is the term's order in the sequence, an is the value of the term, and an-1 is the value of the term before an. This makes the next number:

a6 = a5 + 4(6 - 1)
a6 = 41 + 4(5)
a6 = 61