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Two boys and three girls are going to sit around a table with 5 different chairs. If the two boys want to sit together, in how many possible ways can they be seated?

 

Each of the digits 1,2,3,4,5,6 is used exactly once in forming the 3-digit integers X and Y. How many possible values of X+Y  are there if |X-Y|=111?

 Apr 17, 2021
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1) There are 18 ways the boys can be seated.

 

2) There are 12 different possible values of X + Y.

 Jun 15, 2021

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