Question

. Find the values of a, b and c, such that the numbers a, 10, b, c, 31 are in A.P.​

Answer 1

Step-by-step explanation:

mind the cropping,otherwise everything is good

Answer 2

Answer:

now the difference is

10-a=b-10=31-c=c-b

• so....a+b=20
• so...b+c=41
• so....c-a=21
• so....c-b+a=10

solving the equations.

21+2a-b=10

2a-b=-11

so...3a=9=>a=3

the series is .....3,10,17,24,31