यदि logx 4 + logx 16 + logx 64 = 12 तो x का मान ज्ञात कीजिए

This question was previously asked in
Territorial Army Official Paper I (Conducted on 28 Jul 2019)
View all Territorial Army Papers >
  1. 1
  2. 2
  3. 7
  4. 54

Answer (Detailed Solution Below)

Option 2 : 2
Free
Territorial Army Full Mock Test
5.8 K Users
50 Questions 100 Marks 120 Mins

Detailed Solution

Download Solution PDF

दिया है:

logx 4 + logx 16 + logx 64 = 12

प्रयुक्त सूत्र:

यदि logx y = a, तो xa = y

logx ab = b logx a

गणना:

logx 4 + logx 16 + logx 64 = 12

⇒ logx 22 + logx 24 + logx 26 = 12

⇒ 2 logx 2 + 4 logx 2 + 6 logx 2 = 12

⇒ 12 logx 2 = 12

⇒ logx 2 = 1

⇒ 2 = x1

∴ x = 2

Latest Territorial Army Updates

Last updated on May 12, 2025

-> The Territorial Army Notification 2025  has been released for the recruitment of Officers.

-> Candidates will be required to apply online on territorialarmy.in from 12 May to 10 June

-> Candidates between 18 -42 years are eligible for this recruitment.

-> The candidates must go through the Territorial Army Exam Preparation Tips to strategize their preparation accordingly.

More Limit and Continuity Questions

Get Free Access Now
Hot Links: teen patti gold real cash teen patti casino apk teen patti plus teen patti boss teen patti master 2025