The average of 6 observations is 12. If the 7th observation is included, the average is reduced by 1. What will be the 7th observation?
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avg = sum(S) / no. of terms
S1 = 12×6 =72
72 +x /7 = 11
72+x = 77
x = 5
x is 7th term
hopenthis will help
S1 = 12×6 =72
72 +x /7 = 11
72+x = 77
x = 5
x is 7th term
hopenthis will help
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