Question

If the arithmetic mean of three consecutive numbers is 63, find the second number.

Answer 1

Answer:

second number = 63

three numbers are 62,63,64

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

let required numbers be x, x+1 and x+2

mean= sum of observations/ number of observations

63= x+x+1+x+2 / 3

(take 3 to other side and multiply with 63)

189= 3x+3

(take 3 to other side and subtract)

189-3=3x

186=3x

(take 3 to other side and divide )

x= 186/3

x= 62

therefore, second number is x+1= 62+1= 63