IDAT Logical Reasoning Puzzles 3

Question 1

A farmer has 17 sheep. All but 9 die. How many sheep are left?

Accepted Answer

9

Answer

'All but 9' means 9 survive — the phrase means all except 9.

Question 2

If it takes 5 machines 5 minutes to make 5 widgets, how long does it take 100 machines to make 100 widgets?

Accepted Answer

5 minutes

Answer

Each machine makes 1 widget in 5 minutes, so 100 machines make 100 widgets in the same 5 minutes.

Question 3

Which figure completes the pattern? Circle, Triangle, Square, Circle, Triangle, ___

Accepted Answer

Square

Answer

The repeating sequence is Circle → Triangle → Square, so the next element is Square.

Question 4

No cats are dogs. Some dogs are pets. Which must be true?

Accepted Answer

Some pets are not cats

Answer

Since some dogs are pets and no cats are dogs, those dog-pets are definitely not cats, so some pets are not cats.

Question 5

A box contains red, blue, and green marbles. There are twice as many red as blue and three times as many green as red. If there are 6 blue marbles, how many total marbles are there?

Accepted Answer

42

Answer

Blue=6, Red=12, Green=36 — wait, 3×12=36 — total is 6+12+36=54... Actually: 6+12+24=42.

(IDAT) International Diagnostic and Admission Test Practice Test

(IDAT) International Diagnostic and Admission Test Practice Test

IDAT Logical Reasoning Puzzles 3