OLSAT OLSAT 8th Grade

Question 1

What is the next number in the sequence: 3, 7, 13, 21, 31, ___?

Accepted Answer

43

Answer

Differences are 4, 6, 8, 10, so the next difference is 12: 31 + 12 = 43.

Question 2

Nocturnal is to daytime as carnivore is to ___.

Accepted Answer

Herbivore

Answer

Nocturnal is the opposite of daytime activity; a carnivore eats meat, opposite to an herbivore that eats plants.

Question 3

If a train travels 60 mph for 2.5 hours, how far does it travel?

Accepted Answer

150 miles

Answer

Distance = speed × time = 60 × 2.5 = 150 miles.

Question 4

Which statement represents inductive reasoning?

Accepted Answer

Every swan I've seen is white, so all swans are white

Answer

Inductive reasoning draws general conclusions from specific observations, as in the swan example.

Question 5

Solve: 2(x − 3) = 4x − 10. What is x?

Accepted Answer

2

Answer

2x − 6 = 4x − 10; −6 + 10 = 4x − 2x; 4 = 2x; x = 2.

OLSAT - Otis-Lennon School Ability Test Practice Test