Question

out of four number average 20 and last four number is 19 if 5 th number is 18 then first number ​

Answer 1

Answer:

25

Step-by-step explanation:let the numbersame be a,b, c, d

Now given that

a+b+c÷3=20

then sum of abc is 60

On continuing the process we get a=25

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

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