Select the letter-cluster from among the given options that can replace the question mark (?) in the following series. ECDR, BGYW, YKTB, VOOG, ?, PWEQ

| Question | Select the letter-cluster from among the given options that can replace the question mark (?) in the following series. ECDR, BGYW, YKTB, VOOG, ?, PWEQ | |
| Type | multiple_choice | |
| Option | SRJL | incorrect |
| Option | RSIL | incorrect |
| Option | SSJL | correct |
| Option | SSKM | incorrect |
| Solution | Pattern: -3, (for first letter of words) +4, (for second letter of words) -5, (for third letter of words) +5, (for fourth letter of words) | |