Question

the average 10 number 65 if a number is 65 if a number 79 read by mistake 89 then what actual average.​

Answer 1

Answer:

Sum of 6 numbers =60×30=180

Sum of first 4 numbers =4×25=100

Sum of last 3 numbers =3×35=105

∴ Fourth number =(100+105)−180

                               =205−180

                               =25

Answer 2

Answer:

25

Step-by-step explanation:

180-205

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