Question

If 4 times the 4th term of an a.P. Is equal to 9 times the 9th term of the a.P., what is the 13th term of this a.P.?

Answer 1

Answer:

0

Step-by-step explanation:

to find nth term

Tₙ=a+(n-1)d

4(a+(4-1)d)=9(a+(9-1)d)

4a+12d=9a+72d

5a+60d=0

a+12d=0

whereas T₁₃=a+(13-1)d=a+12d

T₁₃=0