Question

Which term of the A.P 4, 11, 18, 25, …………. is 56 more than its 25 th term ?

Answer 1

Answer:

33

Step-by-step explanation:

d= 11-4= 7

an= a+(n-1)d

an=4+(n-1)7

then

a(?)=56+a25

a(?)=56+4+(25-1)7

=56+4+24*7

= 60+168

=228

so,

4+(n-1)7=228

4+7n-7=228

7n-3=228

7n=231

n=33