Question

Please help me with this on the picture

Answer 1

Answer:

5, 7

Step-by-step explanation:

The mode of the numbers is 5, which means that 5 should be the most common card (highest frequency). Therefore the cards should have at least one more 5 among them.

Considering that 5 is one of the hidden cards and x is the other,

• Using the equation for the mean:

$mean = \frac{sum \space\ \space\ of \space\ \space\ numbers}{number \space\ \space\ of \space\ \space\ numbers}$

$6 = \frac{4+5+ 9 + 5 + x}{5}$

⇒ $30=23 + x$

⇒ $x = 7$

This means 5 and 7 are the hidden cards.