Question

if 7m-2 ,5m-8 and m+1 are im A.P then find the value of m​

Answer 1

Answer:

when three numbers a b c are in ap

2b = a + c

on applying same concept on above problem

2(5m-8) ===> 7m-2 + m-1

10m - 16 ===> 8m - 1

now on solving we get m = 15/2

Answer 2

Answer:

If a,b and c are in A.P,then

b=(a+c)/2

so,

here, 5m-8= (7m-2 + m+1)/2

so, 10m -16 =8m -1

2m= 15

or m= 15/2