Question

the general formula of an AP is dash is t3 is 6 and d is -3​

Answer 1

General term of an A.P

$t_{n}=a+(n-1)d$

It is given that ,

d=-3 ,
$t_{3}=6$

=> a+(3-1)(-3)=6

=> a + 2(-3)=6

=> a -6 = 6

=> a = 6+6

=> a = 12

••••

Answer 2

Answer:

6

Step-by-step explanation:

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