The number of distinct subsets of size k from a set of size n is tbinom nk or n choose k.
n choose k
I remember him taking umbrage when he thought I was doubting his grandmother's skills so I am quick to pour oil on troubled waters.
His collection of songlines and timelines snarled at him like a screwtaped confession.
I rushed towards her, and embraced her with ardour; but the deathly languor and coldness of the limbs told me, that what I now held in my arms had ceased to be the Elizabeth whom I had loved and cherished.
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