Question

Is 220 in the sequence below? − 4 , − 1 , 2 , 5 , 8 , .

Answer 1

Answer:

No , 220 is not in the sequence below.

Step-by-step explanation:

a = -4 , d = a2 - a1 = (-1) -(-4) = 3

here common difference will be (d) 3

an = a + ( n-1 )d

220 = (-4) + (n-1) 3

220+4 = 3n -3

224 +3 = 3n

227 = 3n

227/3 = n

75.67 = n

Thus, nth value never be in decimal.

So, We can say that 220 is not the term of given AP.