Question

3, 7, 29, 143, 779, ?

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Answer 1

Answer:

4999

Step-by-step explanation:

• The series is x2 + 13, x3 + 23, x4 + 33, x5 + 43, …
• ie 3 x 2 +13 = 7,
• 7 x 3 + 23 = 29,
• 29 x 4 + 33 = 143,
• 143 x 5 +43 = 779,
• 779 x 6 + 53= 4799

Answer 2

3, 7, 29, 143, 779, 4799

3 x 2 + 1^3 = 7

7 x 3 + 2^3 = 29

29 x 4 + 3^3 = 143

143 x 5 + 4^3 = 779

779 x 6 + 5^3 = 4799