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1 of 8 0-day streak

Event notation and shaded regions

DIFFICULTYchallenge
QUESTION TYPEMix of allChange
set notation: A only count (words to symbols)set notation: A only count (symbols to words)set notation: A only count (symbols to diagram)set notation: A only probability (words to symbols)set notation: A only probability (symbols to words)set notation: A only probability (symbols to diagram)set notation: B only count (words to symbols)set notation: B only count (symbols to words)set notation: B only count (symbols to diagram)set notation: B only probability (words to symbols)set notation: B only probability (symbols to words)set notation: B only probability (symbols to diagram)set notation: both count (words to symbols)set notation: both count (symbols to words)set notation: both count (symbols to diagram)set notation: both probability (words to symbols)set notation: both probability (symbols to words)set notation: both probability (symbols to diagram)set notation: neither count (words to symbols)set notation: neither count (symbols to words)set notation: neither count (symbols to diagram)set notation: neither probability (words to symbols)set notation: neither probability (symbols to words)set notation: neither probability (symbols to diagram)NOWMix of allRecommended
Question 1 of 8

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A group of buttons is classified by two properties

Let \(A\) be the set of flat buttons, and let \(B\) be the set of coloured buttons

The universe \(S\) contains 25 items. Each item is equally likely to be selected when a probability is requested

The Venn diagram shows the count in each disjoint region

Venn diagram in universe S with set A for flat items and set B for coloured items. A-only region is labelled 4; B-only region is labelled 3; shared region is labelled 12; region outside both sets is labelled 6.Sflatcoloured43126
(a)1 mark

Which set notation describes items in A only?

(b)1 mark

State the count for the group in A only

Format: whole number