Question

Find the missing number in the following series. 3, 5, 13, 43, 177, ......?

• A. 891
• B. 713
• C. 885
• D. 899

Hint:

For number series, look for recursive patterns involving multiplication, addition, or subtraction with incrementing/decrementing values.

Answer 1

The Correct Option is A

To find the pattern in the series 3, 5, 13, 43, 177, ...?, observe the multiplicative and additive steps: - 3 × 1 + 2 = 5 - 5 × 2 + 3 = 13 - 13 × 3 + 4 = 43 - 43 × 4 + 5 = 177 - 177 × 5 + 6 = 891 The pattern involves multiplying by consecutive integers and adding the next integer. Thus, the missing number is 891. Therefore, the correct answer is (1) 891.