निम्नलिखित पैटर्न में लुप्त संख्या ज्ञात कीजिए: 2 → 2, 3 → 6, 4 → 12, 5 → 20, 7 → ?

Which of the following options will best complete the relationship given below? 9 (541) 6 7 (633) 9 4 ( ? ) 8

Select the number which can be placed at the sign of question mark (?) from the given alternatives: 4 7 45 8 46 5 81200 2800 ?