Brain Teasers
60, 30, 20, 15, ?, ?
Find next two numbers in the series:
60, 30, 20, 15, ?, ?
60, 30, 20, 15, ?, ?
Answer
12 and 10The pattern is 60 divide by the position of the number.
The first number is 60/1 = 60
The second number is 60/2 = 30
The third number is 60/3 = 20
The fourth number is 60/4 = 15
The fifth number is 60/5 = 12
The sixth number is 60/6 = 10
Another pattern might be subtract 1/2, 1/3, 1/4, 1/5, etc. from the previous number.
Hence the next two numbers in the series are 12 and 10
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Comments
I multiplied by 1/2 then 2/3 then 3/4 ..4/5 etc It works. Good puzzle.
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