What should come in place of the question mark (?) in the given series?
4, 20, 100, 500, 2500, ?

The series 4, 20, 100, 500, 2500, ?.
Logic: Each term is multiplied by 5 to get the next term:

4 × 5 = 20

20 × 5 = 100

100 × 5 = 500

500 × 5 = 2500

3. Continuing this pattern,

2500 × 5 = 12500.

Therefore, the next term is 12500.
Hence, option (d) is correct. ​​