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AppNexus Interview Puzzle #1 - Popular Deductive Logic Problem

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Eight Brothers lives in an old house where there is no electricity and no computers or any any other gadget.

Brother-1: Reading Comics
Brother-2: Playing Chess
Brother-3: Writing
Brother-4: making food for the family
Brother-5: sleeping and snoring
Brother-6: cleaning house
Brother-7: watering the plants


what is Brother-8 doing ?

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AppNexus Interview Puzzle #2 - Two Dice Probabilty Problem

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If you throw two dice at a same time.

Can you find the probability of getting sum as 10 of the two numbers shown ?

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AppNexus Interview Puzzle #3 - Brain Teasing Statement

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Britney tells truth only once a week. Below are a few hints for you:

First Hint: Days are Sunday, Monday and so on.
Second Hint: One day she says that she lies on Monday and Tuesday.
Third Hint: On the next day she says, 'Today is either Thursday, Saturday or Sunday'.
Fourth Hint: On the next day, she says that she lies on Wednesday and Friday.

Can you find out on which day does Britney speaks truth ?

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AppNexus Interview Puzzle #4 - Box Ball Logic Problem

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There are three bags.The first bag has two blue rocks. The second bag has two red rocks. The third bag has a blue and a red rock. All bags are labeled but all labels are wrong.You are allowed to open one bag, pick one rock at random, see its color and put it back into the bag, without seeing the color of the other rock.

How many such operations are necessary to correctly label the bags ?

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AppNexus Interview Puzzle #5 - Chances Of Second Girl Child Problem

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tipli and pikli are a married couple (dont ask me who he is and who she is)

They have two children, one of the child is a boy. Assume safely that the probability of each gender is 1/2.
What is the probability that the other child is also a boy?

Hint: It is not 1/2 as you would first think.

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