3, 11, 31, 69, 131, 223, ?1). 3512). 3503). 3494). 270

1.	3, 11, 31, 69, 131, 223, ?1). 3512). 3503). 3494). 270
Answer» If we look at the numbers carefully, they follow the pattern, ⇒ 3 = 1³ + 2 ⇒ 11 = 2³ + 3 ⇒ 31 = 3³ + 4 ⇒ 69 = 4³ + 5 ⇒ 131 = 5³ + 6 ⇒ 223 = 6³ + 7 According to the pattern, the next NUMBER should be, ⇒ 7³ + 8 = 351 ∴ ? = 351

Answer»

If we look at the numbers carefully, they follow the pattern,

⇒ 3 = 1³ + 2

⇒ 11 = 2³ + 3

⇒ 31 = 3³ + 4

⇒ 69 = 4³ + 5

⇒ 131 = 5³ + 6

⇒ 223 = 6³ + 7

According to the pattern, the next NUMBER should be,

⇒ 7³ + 8 = 351

∴ ? = 351

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