Question

If the 2nd term to 12 and the 4th term in 24 find a and d?

Answer 1

Answer:

a = 6, d = 6

Step-by-step explanation:

let a be the first term and d be the common difference

t₂ = a + d = 12  ----- (i)

t₄ = a + 3d = 24 ----- (ii)

subtract (i) from (ii)

a + 3d =  24

a + d =   12

-  -       -

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2d = 12

=> d = 6

substitute value of d in (i)

a + d = 12

a + 6= 12

=> a = 6.

Answer 2

here is your answer........