Puzzle 5
Can you complete this sentence using words which are anagrams of each other?
Only the ? students could solve the hard ? equation.
Puzzle Copyright © Kevin Stone
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Hint
Both words begin with the letter B.
Answer
Brainy and binary.
Puzzle 6
What are the next two numbers in this sequence:
14 · 91 · 62 · 53 · 64 · 96 · ? · ?
Puzzle Copyright © Kevin Stone
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Hint
Try removing the spaces between the numbers.
Answer
48 and 11.
Reasoning
These are the squares of numbers without the correct spacing.
1 4 9 16 25 36 49 64 81 100
with no spaces becomes:
149162536496481100
broken into blocks of two:
14 91 62 53 64 96 48 11 00
So the next two in the sequence are 48 and 11.
Puzzle 7
The month of March in the year 1980 contained 5 Saturdays and 5 Mondays.
What day of the week was the 15th of March?
Puzzle Copyright © Kevin Stone
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Hint
What day of the week was the 1st?
Answer
Saturday.
Reasoning
For a 31-day month, such as March, to have 5 Saturdays and 5 Mondays the 1st must be a Saturday (and the 31st a Monday).
You can then work forwards from the 1st.
Puzzle 8
What number comes next in this sequence:
3 · 3 · 5 · 4 · 4 · 3 · 5 · ?
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Hint
This is a very common sequence.
Answer
5.
The numbers represent the number of letters of the words ONE, TWO, THREE, etc. Therefore the answer is the number of letters in the word EIGHT.
