In an Arithmetic Progression, if a = 28, d = - 4, n = 7, then an is _____?
In an Arithmetic Progression, if a = 28, d = - 4, n = 7, then an is _____?
Explanation
Formula: aₙ = a + (n - 1)d
a₇ = 28 + (7 - 1)(-4) = 28 + (6 × -4) = 28 - 24 = 4
Formula: aₙ = a + (n - 1)d
a₇ = 28 + (7 - 1)(-4) = 28 + (6 × -4) = 28 - 24 = 4