किसके बराबर है?

This question was previously asked in
NDA (Held On: 9 Sept 2018) Maths Previous Year paper
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Answer (Detailed Solution Below)

Option 3 :
Free
NDA 01/2025: English Subject Test
30 Qs. 120 Marks 30 Mins

Detailed Solution

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धारणा:

  •  और  दो सदिश एक दूसरे के समानांतर हैं ⇔ 
  • समानांतर सदिशों का क्रॉस गुणनफल शून्य हैं ⇔
  • एक क्रॉस या सदिश गुणनफल क्रमविनिमेयशील नहीं है ⇔ 


गणना:

हमें का मूल्य खोजना होगा

हम जानते हैं कि 

 

∴ विकल्प 3 सही है।

Latest NDA Updates

Last updated on Jun 18, 2025

->UPSC has extended the UPSC NDA 2 Registration Date till 20th June 2025.

-> A total of 406 vacancies have been announced for NDA 2 Exam 2025.

->The NDA exam date 2025 has been announced. The written examination will be held on 14th September 2025.

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