Question

Here are 5 numbers- 2 5 7 8 9
one of the cards is removed and the mean average of the 4 remaining numbers is 6
which card was removed?

Answer 1

Step-by-step explanation:

The sum of 5 no. = 2+3+7+8+9

= 29

The average of 4 no. is = 6 (Given)

so, Sum of 4 no. = 6×4

= 24

Then, The 5th no be.

= ( Sum of 5 no.s - Sum of 4 no.s )

= 29 - 24

= 5 ans.

Hope it will help you

Answer 2

Answer:

Card 7 must be removed.

Step-by-step explanation:

4x6=24

2+5+7+8+9=31

31-24=7