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20 FAST Logical reasoning questions with answers and explanations.
Printable worksheet with answer key
Find the next number: 2, 6, 12, 20, ?
Correct answer: 30
The gaps are 4, 6, 8, so the next gap is 10 and the number is 30.
Which number is the odd one out: 8, 27, 64, 100?
Correct answer: 100
The others are cubes (2³, 3³, 4³), and 100 is not a cube.
In a code, BOOK is written as CPPL, with each letter moved one place forward. How is DOOR written?
Correct answer: EPPS
Each letter moves one place forward: D to E, O to P, O to P, R to S.
A man walks 5 km north, then 3 km east, then 5 km south. How far is he from the start?
Correct answer: 3 km
The north and south parts cancel, so only the 3 km east remains.
A is the sister of B, C is the mother of B, and D is the father of C. How is A related to D?
Correct answer: Granddaughter
A is the daughter of C, and D is the father of C, so A is the granddaughter of D.
Find the next number: 3, 6, 12, 24, ?
Today is Wednesday. What day will it be after 10 days?
Correct answer: Saturday
10 days is one week and 3 days, and Wednesday plus 3 days is Saturday.
What is the angle between the hands of a clock at 3:00?
Correct answer: 90°
The hour hand points at 3 and the minute hand at 12, which is a quarter of a circle.
Book is to reading as fork is to:
Correct answer: Eating
A book is used for reading and a fork is used for eating.
In a row of people, A is 4th from the left and 6th from the right. How many people are in the row?
Find the next number: 1, 4, 9, 16, 25, ?
All doctors are graduates, and all graduates are educated. Which statement must be true?
Correct answer: All doctors are educated
The first statement links doctors to graduates and the second links graduates to educated people.
Find the next number: 7, 14, 28, 56, ?
Today is Tuesday. What day is the day after tomorrow?
Which shape is the odd one out: triangle, square, circle, pentagon?
In a code, A = 1, B = 2 and so on. How is DOG written?
A person facing east turns left. Which direction does the person face now?
Find the next letter: Z, X, V, T, ?
Sana is older than Rida, and Rida is older than Hira. Who is the youngest?
If 6 pencils cost Rs 30, what do 10 pencils cost?