Logic Puzzles


Logic 31

How many minutes after one o'clock is it if the number of minutes since one o'clock is nine times the number of minutes before five o'clock?

Logic 32

Which three letters complete the string?

Y Y H L Y E Y T R _ _ _

Logic 33

Two friends are discussing their children.

  • A: I have three children.
  • B: How old are they?
  • A: The product of their ages is 40.
  • B: That's not much help!
  • A: The sum of all their ages is equal to the age of your daughter.
  • B: I need more information.

How old is B's daughter?

Logic 34

How many minutes is it before three o'clock if twenty minutes ago it was three times as many minutes past one o'clock?

Logic 35

A large bottle contains a collection of coins. When you examine the contents you are amazed to discover that there are an equal number of each type of denomination: 1p, 2p, 5p, 10p, 20p, 50p, £1, and £2. Even more remarkable is that if you remove one coin there will be an exact amount in pounds.

What is the smallest amount, in pounds, that could be in the bottle?

Logic 36

Given that (ab) represents a two digit number, find the only two digit number, (ab), for which the following is true.

(ab) + b = (ba)

Logic 37

What value should the final box contain?

APPLE     64
BANANA     75
CHERRY     81
DAMSON        ?   

Logic 38

A family comprises of six children: triplets (aged 2), twins (aged 4), and a twelve year old.

A box containing 91 sweets is to be split between the children according to age.

How many sweets does the eldest child receive?

Logic 39

What is the next number is the following sequence?

1, 2, 3, 5, 8, 13, 21, 34, __

Logic 40

A set of cards are dealt from a pack of 52 standard playing cards and it is found to contain one Heart, two Aces, three Clubs, four Kings, and five Spades.

What is the least number of cards this set could contain?