Question

If common difference of A.P is -6, find a16 - a12.

Answer 1

Answer:

-24

Step-by-step explanation:

Let a be the first term and d the common difference (so d = -6).

Then the n-th term is given by

aₙ = a + (n-1)d.

In particular, we have

a₁₆ = a + 15d

a₁₂ = a + 11d

So

a₁₆ - a₁₂ = ( a + 15d) - (a + 11d) = 4d = 4 × -6 = -24.