What is the decimal value for HEX 2A

This question was previously asked in
RRB ALP Electronics Mechanic 23 Jan 2019 Official Paper (Shift 2)
View all RRB ALP Papers >
  1. 22
  2. 42
  3. 32
  4. 12

Answer (Detailed Solution Below)

Option 2 : 42
Free
General Science for All Railway Exams Mock Test
2.1 Lakh Users
20 Questions 20 Marks 15 Mins

Detailed Solution

Download Solution PDF

Concept

The hexadecimal numbers are represented by the combination of 4 bits.

We know that for converting hexadecimal to decimal we will start from the right side of the digit and multiply it with 16, having 16 raised to the power 0, with the increase in digits we will increase the power to 1,2,3,4... so on according to the digit.

Calculation

The hexadecimal equivalent of HEX 2A is:

\((HEX 2A)_{10} =[(A\times 16^0)+(2\times 16^1)]\)

The decimal equivalent of A is 10.

\((HEX 2A)_{10} =[(10\times 16^0)+(2\times 16^1)]\)

\((HEX 2A)_{10} =10+32\)

\((HEX 2A)_{10} =42\)

Latest RRB ALP Updates

Last updated on Jun 2, 2025

-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.

-> Railway Recruitment Board activated the RRB ALP application form 2025 correction link, candidates can make the correction in the application form till 31st May 2025. 

-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.

-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.

-> The official RRB ALP Recruitment 2025 provides an overview of the vacancy, exam date, selection process, eligibility criteria and many more.

->The candidates must have passed 10th with ITI or Diploma to be eligible for this post. 

->The RRB Assistant Loco Pilot selection process comprises CBT I, CBT II, Computer Based Aptitude Test (CBAT), Document Verification, and Medical Examination.

-> This year, lakhs of aspiring candidates will take part in the recruitment process for this opportunity in Indian Railways. 

-> Serious aspirants should prepare for the exam with RRB ALP Previous Year Papers.

-> Attempt RRB ALP GK & Reasoning Free Mock Tests and RRB ALP Current Affairs Free Mock Tests here

Get Free Access Now
Hot Links: teen patti wealth teen patti game teen patti lotus teen patti gold old version