Q: Objects that start with R

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· rockets · Rovers (US exploration of Mars)

Words that start with R and end with R:racerradarradiatorrafterrancherrancorratherrazorreaderreaperreappearrearreceiverrecorderrecoverregisterregularregulatorreindeerrelieverremainderrememberreminderremoverrenterreoccurrepairreporterresistorresponderretailerretainerretrieverrevolverriderrigorringerriserriverroarrobberrockerrollerrooferroosterrosterrubberrulerrumorrunner

hammer

Objects that start with the letter "O" include orange, olive, ocean, octopus and owl. Other objects include oatmeal, oboe and octagon.

Perhaps a xylophone

Related questions

· Rovers (US exploration of Mars)

· rockets · Rovers (US exploration of Mars)

· rabbit · rake · receipt · rifle · ring · rock · rope · rose

If there are n objects and you have to choose r objects then the number of permutations is (n!)/((n-r)!). For circular permutations if you have n objects then the number of circular permutations is (n-1)!

R a d a r

R a d a r

rover

The number of R-combinations in a set of N objects is C= N!/R!(N-R)! or the factorial of N divided by the factorial of R and the Factorial of N minus R. For example, the number of 3 combinations from a set of 4 objects is 4!/3!(4-3)! = 24/6x1= 4.

none

If you have n objects and you are choosing r of them, then there are nCr combinations. This is equal to n!/( r! * (n-r)! ).

Words that start with R and end with R:racerradarradiatorrafterrancherrancorratherrazorreaderreaperreappearrearreceiverrecorderrecoverregisterregularregulatorreindeerrelieverremainderrememberreminderremoverrenterreoccurrepairreporterresistorresponderretailerretainerretrieverrevolverriderrigorringerriserriverroarrobberrockerrollerrooferroosterrosterrubberrulerrumorrunner

glass