Question

i need answer please

Answer 1

let a and b be the AM b\w 1/3 and 1/24 then
1/3 , a , b , 1/24 are in AP
l = a+ (n - 1) d
1/24 = 1/3 + (4 - 1)d
d = -7/72

a = 1/3 +(-7/72) = 17/ 72

&

b = 1/3 + 2(-7/72) = 5/36