A number is missing from the number series below.
Can you find it ?
84, 155, 258, 399 , 584, ?.
Pick:
A) 275	B) 350	C) 399	D) 421	E) 819
E   The missing number is 819.   84 = 4^3 + 3^2 + 4   155 = 5^3 + 5^2 + 5   258 = 6^3 + 6^2 + 6   399 = 7^3 + 7^2 + 7   584 = 8^3 + 8^2 + 8   Thus,   819 = 9^3 + 9^2 + 9
<result>E</result>
A number is missing from the number series below.
Can you find it ?
84, 155, 258, 399 , 584, ?.