Math, asked by Simran7579, 1 year ago

answer this question

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Answered by Swaridh

3

Answer:

50

Step-by-step explanation:

add all the terms and divide by 4 and equate it by 20

you will get the ans

Answered by diksha3590

1

Answer:

average=sum of observation/no. of obsv.

20 =5+10+15+x/4

20×4=30+x

80-30=x

50=x

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