Brainteasers

What is the greatest dollar value in coins you can have in your hands without being able to make change for a dollar?

You have stacks of quarters, dimes, nickels and pennies (these represent $0.25, $0.10, $0.05 and $0.01, respectively, in the US monetary system for anyone international). There are an unlimited number of coins in each stack. You can take coins from a stack in any amount and in any order and place them in your hand. …

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How would you test a calculator?

Test the functionality of the calculator’s computing accuracy by evaluating whether inputs provide their expected outputs. Also, test the device’s basic system functions — like the power button, the clear function, and so on, to determine whether you’ll be facing system errors before you can compute anything. Depending on the position for which you’re interviewing, …

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