Evaluate ${ } _ { n } C _ { r }$

question 213

Multiple Choice

Evaluate ${ } _ { n } C _ { r }$ using the formula from this section. ${ } _ { 6 } C _ { 1 }$

• A)8
• B)7
• C)9
• D)10
• E)6

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Definitions:

Delta Waves

Long, slow brain waves that indicate the deepest stage of sleep.

REM Sleep

A phase of sleep characterized by rapid eye movements, where dreaming often occurs and brain activity is high, resembling wakefulness.

Slow Wave Sleep

A phase of sleep characterized by low frequency, high amplitude brain waves, indicative of deep, restorative sleep.

Sleep Spindles

Brief bursts of brain activity, characterized by rapid rhythms, that occur during stage 2 of non-REM sleep and are associated with learning and memory consolidation.