How many subset of 6 can I get from 18 elements

Let A be a subset of T={1,2,…,100} subject to the condition that if 2 distinct elements a and b are...

Let Pn be the set of all subsets of the set [n]={1,2,…,n}. If two elements of P5 are chosen at rando...

A subset S of {1,2,…,n} is said to be packed if whenever i,j∈S the number ⌊(i+j)/2⌋ is also in S. De...

Let S be a subset of {1, 2, 3,... 100}, containing 50 elements. How many such sets have the property...

1. To which subset(s) does the number √42 belong? Rational numbers Irrational numbers Whole nu...

Let S be a subset of {1, 2, 3,...100}, containing 50 elements. How many such sets have the property...

To which subset(s) does the number –square root of twenty belong? Choose all that apply. (Irratio...

name to which subset of the real numbers wo which each number belongs 2/3 = Rational -1 = Integer...

Let A be a subset of U. {null,{null}} - {null} =?

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