A number is missing from the number series below.
Can you find it ?
84, 155, ?, 399 , 584, 819.
Answers
A) 275 B) 350 C) 399 D) 258 E) 449
D   The missing number is 258.   84 = 4^3 + 3^2 + 4   155 = 5^3 + 5^2 + 5   399 = 7^3 + 7^2 + 7   584 = 8^3 + 8^2 + 8   819 = 9^3 + 9^2 + 9   Thus,   258 = 6^3 + 6^2 + 6
<result>D</result>
A number is missing from the number series below.
Can you find it ?
84, 155, ?, 399 , 584, 819.