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#128 Re: Exercises » Is this cool with you? » 2011-02-23 05:10:25

Hi bobbym,

bobbym wrote:

New problem!

How many positive integers <100 have the property that the sum of the digits plus the product of the digits equals the number?

A says) 10.
B says) 9
C says) You missed one B!
D says) He missed 2.

#138 Re: Jai Ganesh's Puzzles » General Quiz » 2011-02-14 00:00:07

Hi ganesh,
I don't know either of them..

#140 Re: Exercises » Probability, 2 fair coins » 2011-02-13 23:54:46

Hi gAr,

gAr wrote:

2 fair coins are flipped and atleast one of the outcomes is known to be a head., what is the probability that both outcomes are head?

You are right.. Here's a problem similar to yours..

A couple has 2 children. One of them is a girl. What is the probability that the other is a girl?

#147 Re: Exercises » What do you think? » 2011-02-11 15:15:08

Hi bobbym,

bobbym wrote:

A real dilly?!

2,4,4,6,6,6,6,8,8,8,8,8,8,8,8,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10...

1) Find the 2012th term.

2) Sum the first 2012 terms.

3) What term has the last 2012?

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