The correct option is A 54,841
The given series is 1, 3, 19, 457, ?.
The series follows the pattern:
1
1 × 2 + 1 = 3
The number is multiplied with 1 × 2, and 1 is added to the result.
The final result is used as the next number.
3 × 1 × 2 × 3 + 1 = 19
The number multiplied with 1 × 2 × 3, and 1 is added to the result.
The final result is used as the next number.
19 × 1 × 2 × 3 × 4 + 1 = 457
The number is multiplied with 1 × 2 × 3 × 4, and 1 is added to the result.
The final result is used as the next number.
The next number would be
457 × 1 × 2 × 3 × 4 × 5 + 1 = 54,841
The number is multiplied with 1 × 2 × 3 × 4 × 5, and 1 is added to the result.
Hence, the missing number is 54,841.