Select the correct passive form of the given sentence.
Someone must have changed the settings.
आपने शायद यह सोचाWhat you probably thought'The settings must have changed' में कर्ता सहजता से हट गया। किंतु यह अब भी active (कर्तृवाच्य) है और कहता है कि settings स्वयं बदल गईं; passive में 'have been changed' आवश्यक है।'The settings must have changed' dropped the agent neatly; but it is still active and says the settings changed by themselves; the passive needs 'have been changed'.
आपने शायद यह सोचाWhat you probably thought'have to be changed' बाध्यता के passive जैसा प्रतीत हुआ। किंतु इसमें 'must have' द्वारा दिया गया भूतकाल का दृढ़ अनुमान नहीं रहता।'have to be changed' sounds like a passive of obligation; but it loses the strong guess about the past that 'must have' carries.
आपने शायद यह सोचाWhat you probably thought'must be being changed' में passive continuous प्रयुक्त हुआ। किंतु यह अभी चल रहे परिवर्तन को बताता है, हो चुकी बात के अनुमान को नहीं।'must be being changed' used a passive continuous; but it describes a change in progress now, not a guess about something already done.
Answer और ExplanationAnswer and explanation
Answer: (B) The settings must have been changed.
must have changed (active) में अस्पष्ट कर्ता someone है।
Concept: Passive में modal वही रहता है और have + V3 बन जाता है have been + V3: must have been + V3। अस्पष्ट कर्ता (vague doer) को छोड़ दिया जाता है।
✓
The settings must have been changed.
must have changed में been नहीं है, इसलिए वह passive नहीं है और settings स्वयं कर्ता बन जाती।
सरल अर्थ: सेटिंग्स ज़रूर बदली गई होंगी।
must have changed (active) with the vague doer someone.
In the passive the modal stays and have + V3 becomes have been + V3: must have been + V3. The vague doer is dropped.
✓
The settings must have been changed.
must have changed has no been, so it is not passive and the settings would be the doer.
बाकी Options उत्तर क्यों नहीं हैंWhy the other options are not the answer
A'The settings must have changed' में कर्ता सहजता से हट गया। किंतु यह अब भी active (कर्तृवाच्य) है और कहता है कि settings स्वयं बदल गईं; passive में 'have been changed' आवश्यक है।'The settings must have changed' dropped the agent neatly; but it is still active and says the settings changed by themselves; the passive needs 'have been changed'.
C'have to be changed' बाध्यता के passive जैसा प्रतीत हुआ। किंतु इसमें 'must have' द्वारा दिया गया भूतकाल का दृढ़ अनुमान नहीं रहता।'have to be changed' sounds like a passive of obligation; but it loses the strong guess about the past that 'must have' carries.
D'must be being changed' में passive continuous प्रयुक्त हुआ। किंतु यह अभी चल रहे परिवर्तन को बताता है, हो चुकी बात के अनुमान को नहीं।'must be being changed' used a passive continuous; but it describes a change in progress now, not a guess about something already done.
Source: SSC Selection Post Phase 14 (Graduation Level) · 25 Sep 2026 · Shift 1। Solution: Prashant Sir, Ramban।Source: SSC Selection Post Phase 14 (Graduation Level) · 25 Sep 2026 · Shift 1. Solution by Prashant Sir, from Ramban.