Question

If a b c d e are five consecutive odd numbers their average is

Answer 1

Answer:4

Step-by-step explanation:

Since they are consecutive odd numbers all the terms are in AP with a common difference 2.

So the first term is a.

Second term, b= a+2

Third term, c = b+2 = a+2+2 = a+4

Fourth term, d = c+2 = a+4+2 = a+6

Fifth term, e = d+2 = a+6+2 = a+8

So average=( a+b+c+d+e)/5

Average = (a+(a+2)+(a+4)+(a+6)+(a+8))/5

Average = (5a+20)/5

Average = a+4

Answer 2

Answer:

Answer-c

Step-by-step explanation:

Since they are consecutive odd numbers all the terms are with a common difference 2.

First number=a=a

Second number=b=a+2

Third number=c=a+4

Fourth number=d=a+6

Fifth number=e=a+8

Average=Sum of Observations/Total Observations

             =a+a+2+a+4+a+6+a+8/5

             =5a+20/5

             =a+4

             =c