Aptitude puzzle

Aptitude puzzle

Bright Zoom Maths,

What is the four-digit number (no zeros) in which the third digit is the number of ′wind′ the first digit is one-half of the third, the second digit is double the third and the last digit is one-half the sum of the first three?

Answer:

2847

Explanation:

Wind = 4 letters

The third number = 4

First digit = 1 / 2 of the third digit

= ( 1 / 2 ) * 4

= 2

Second digit = Double the third digit

= 2 * 4

= 8

Fourth digit = 1 / 2 of the sum of first three digits

= ( 1 / 2 ) * ( 2 + 8 + 4 )

= ( 1 / 2 ) * 14

= 7

Four digit number = 2847








Comments

Post a Comment

Popular posts from this blog

Tricks to multiply a number by 39

Tricks to multiply a number by 39 Example: 1 26 * 39 Step 1: Multiply 26 by 4 26 * 4 = 104 Step 2: Multiply 104 by 10 104 * 10 = 1040 Step 3: Subtract 26 from 1040 1040 - 26 = 1014 26 * 39 = 1014  Example: 2 125 * 39 Step 1: Multiply 125 by 4 125 * 4 = 500 Step 2: Multiply 500 by 10 500 * 10 = 5000 Step 3: Subtract 5000 from 125 5000 - 125 = 4875 125 * 39 = 4875 Example: 3 342 * 39 Step 1: Multiply 342 by 4 342 * 4 = 1368 Step 2: Multiply 1368 by 10 1368 * 10 = 13680 Step 3: Subtract 342 from 13680 13680 - 342 = 13338 342 * 39 = 13338
Read more

Logical Reasoning - Essential Part

Logical Reasoning skills  Logical Reasoning - Essential Part 1. Choose the word that is necessary for the word given in the question: Saddle A. Horse B. Seat C. Stirrups D. Horn Answer : B. Seat Explanation :  A saddle is something one uses to sit on an animal, so it must have a seat (choice b). A saddle is often used on a horse (choice a), but it may be used on other animals. Stirrups (choice c) are often found on a saddle but may not be used. A horn (choice d) is found on Western saddles, but not English saddles, so it is not the essential element here. 2. Choose the word that is necessary for the word given in the question: Cell A. Running B. Swimming C. Winning D. Speaking Answer : C. Winning Explanation :  Without a first-place win, there is no champion, so winning is essential. There may be champions in running, swimming, or speaking, but there are also champions in many other areas. 3. Choose the word that is necessary for the word given in the question: Glacier A....
Read more

Problems on Trains - Aptitude Questions and Answers part -2

Problems on Trains - Aptitude Questions and Answers part -2  This is aptitude questions and answers section on "Problems on Trains" with explanation for various interview, competitive examinations and entrance tests. Candidates can practice the Problems on Trains Quiz, Problems on Trains MCQ, Problems on Trains Aptitude Questions, Problems on Trains Multiple Choice Questions and Answers from the below section. Problems on Trains Questions - Problems on Trains Quiz Details Test Name:   Problems on Trains Exam Type:  Multiple Choice Questions Category : Aptitude Quiz Number of Questions :  77 Problems on Trains Formulae: 1. km/hr to m/s conversion a km/hr = (a x5/18) m/s 2. m/s to km/hr conversion  a m/s = (a x18/5) km/hr 6. A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform? A. 120 m B. 240 m C. 300 m D. None of these Answer & Explanation A...
Read more