Latest CTS Aptitude Question SOLUTION: There are 4 numbers as 5,8,2,1 Form 4, four digit numbers as A, B and find the sum?

• Placement Papers
• /
• CTS
• /
• Numerical Ability
• /
• Number System

CTS Question Papers: CTS Interview Experience(3) CTS Company Profile

(#M40007319) CTS Numerical Ability question Number problem Keep an EYE

There are 4 numbers as 5,8,2,1 Form 4, four digit numbers as A, B and find the sum?

Asked In CTS (12 years ago)

Unsolved Read Solution (1)

Is this Puzzle helpful?   (8)   (0) Submit Your Solution Number System

Read Solution (1) :

abhilash patra  (10 years ago)

1,2 5, 8 - 4 numbers that can be arranged to form 4-digit number in 4! ways = 24 ways.

For totalling If we place all the 4 digit numbers formed vertically one below each other
eg
1285
2185
8125
2518
Out of 24 such arrangements each number (A or B or C or D) repeats itself in a vertical column (eg tens place or units place) = 24/ 4 = 6 times
so total of each column is (1 + 2 + 5 + 8) = 16
so each total is repeated 6 times hence total of a vertical row = 16 * 6 = 96

so total of all 4 digit numbers formed numbers is 96 (1+10+100+ 1000) = 96*(1111) = 106656

Is this solution Helpfull? Yes (7) | No (2)  

Please Login to Read Solution.