# What number do you think the robber should have said?

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One day a robber got into a bank to rob its vault. However, he noticed that the vault had an unusual lock. So he hid behind a desk and watched how others got in. He noticed that the manager came up to the vault door and pressed a button. The lock read out a number in response to which the manager said a number of his own. On doing so the door opened. This happened twice. The first time the lock said 12 and the manager responded with 6. The second time the lock said 6 and the manager responded with 3. Believing that now he knew all that he needed to know, the robber approached the door. The door said 10 and in reply the robber entered 5. It set of the alarm and the robber was apprehended.

What number do you think the robber should have said?

posted Jul 30, 2015
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## 2 Solutions

+2 votes

twelve = 6
six = 3
ten = 3
Its the number of letters in the word.

solution Jul 30, 2015
+1 vote

Answer is 3,

it is dependant on the number of alphabets

solution Jul 31, 2015

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A man wanted to get into a members only club so he hide and watched the guard at the door of the club house. The guard said a number to each member as they approached, and the member would respond with a number of their own. If the member responded with the correct number they were let in. If they responded incorrectly they were thrown out.

One member came up to the door, the guard said twelve, and the member responded with six and was let in. Another member came to the door, the guard said six and the member responded with three and was let in.

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+1 vote

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