Logic Puzzles

Puzzles:

Logic 21

Julie is a careful driver and never breaks the speed limit. One day as she set off on a journey in her car she noticed that the odometer was displaying 13931 miles, which was palindromic (the same forwards and backwards). After completing the journey, which took two hours, Julie could not believe that it was palindromic once more. What was her average speed during the journey?

Logic 22

What is the next number in the following sequence?

8, 5, 4, 9, 1, 7, 6, 3, 2, __

Logic 23

One3
Two6
Three11
Four15
Five19
Six22

What number is associated with ten?

Logic 24

Which number comes next in the sequence?

3, 7, 10, 11, 12, 17, 20, 23, 27, __

Logic 25

What is the lowest number which when written out in words requires the five vowels A, E, I, O, and U, once each in its spelling?

Logic 26

Which element completes the sequence?

Fluorine, Radium, Nitrogen, Potassium,
Iodine, Nitrogen, Cerium, Nitrogen, _____

Logic 27

The ages of Alice and Bob add to 51, Alice and Carol add to 42, and Bob and Carol add to 63.

What is the sum of all three ages?

Logic 28

What two letters complete the string?

O T T F F S S E _ _

Logic 29

What number should replace the question mark?

3254
 
5343
 
2406
 
4?7

Logic 30

What numbers comes next in the following sequence?

13, 23, 35, 44, 54, 63, 75, __
Puzzles: