Question

plz ans this
in place of m the terms use 11th terms

Answer 1

that much you have solved is correct .

then after divide the numerator and denominator individually by 2

you will found

(a)+(n-1)d/2 divide by( a')+(n-1)d'/2

we have to find 11 term so by above obtained formula

a+(n-1)d/2

here (n-1)/2=11 because nth term must equal to 11 and here nth term is (n-1)2

n-1=22

n=23

now we have,

7n+1/4n+27

7(23)+1/4(23)+27

162/119