Crosswords0 min ago
Spy vs Spy
3 Answers
To enter a secure door, two numbers are displayed and the person trying to gain access must enter a third number. The first two numbers relate to the 3rd number. A spy watching saw when 1 and 2 were displayed, 9 was entered. When 3 and 4 were displayed, 20 was entered. And when 5 and 6 were displayed, 12 was entered. The spy goes up to the door and finds 17 and 12 displayed. What number must he enter to gain access?
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this is how i came up with 54:
in each case, the number of LETTERS in the first two numbers is multiplied to give the third number. i.e., 1 and 2, when spelled out ('ONE and TWO') contain 3 letters each. 3 times 3 is 9.
in the same way, 'THREE' has 5 letters and 'FOUR' has 4 letters - 5 times 4 is 20. again, 'FIVE' (4 letters), 'SIX' (3 letters) - 4 times 3 is 12.
finally, 'SEVENTEEN' has 9 letters and 'TWELVE' has 6, so 9 times 6 makes 54.
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