If 4th term of an ap is 0 prove that the 25th term is three times its

1.	If 4th term of an ap is 0 prove that the 25th term is three times its 11th term
Answer» a4=0a+3d=0a=-3da25=a+24d =-3d+24d =21da11=a+10d =-3d+10d =7da25 =a1121d=7d×321d=21d. Hence proof Same question even numbers are not changed. Isi app me ,mathematics >cbse last year paper > 2016 paper (set 1)all India > question 9

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