Latest TCS Aptitude Question SOLUTION: how many numbers are there between 10-99 such that the number exceeds its sum of its digits by 18?

• Placement Papers
• /
• TCS
• /
• Numerical Ability
• /
• Profit and Loss

TCS Question Papers: TCS Interview Experience(90) TCS Company Profile

(#M40040116) TCS Numerical Ability question number Keep an EYE

how many numbers are there between 10-99 such that the number exceeds its sum of its digits by 18?

Asked In TCS malini devi (9 years ago)

Unsolved Read Solution (9)

Is this Puzzle helpful?   (6)   (5) Submit Your Solution Profit and Loss

Read Solution (9) :

shikha  (9 years ago)

let the no. be xy
then 10x+y-(x+y)=18
on solving we get x=2 and y gets cancelled out which means that it is independent of the value of second digit in the number
hence the all the nos starting with 2 .. therefore the nos will be 20-29 which is 10 nos in all

Is this solution Helpfull? Yes (50) | No (4)  

Mazeed  (9 years ago)

here, question clearly clarifies that, the sum of their individual digits should be exceeds 18. the number should be between 10-99 .. clearly 9+9 = 18 which means it does not exceeds .. so no number between given range should satisfy given condition.. so zero is the answer. am i right ?

Is this solution Helpfull? Yes (6) | No (1)  

mamta garkoti  (9 years ago)

the numbers will be from 20-29
20=2+18,
21=3+18,
22=2+18,
and so on upto
29=11+18
hence total possible values= 10

Is this solution Helpfull? Yes (5) | No   

prienka bakshi  (9 years ago)

the question is not clear. plz somebody clear the question first.

Is this solution Helpfull? Yes (2) | No   

Tamal Chakraborty  (9 years ago)

if 10x+y-(x+y)=18 ;
x=2
so numbers from 20 to 29.
in total = 10 nos.

Is this solution Helpfull? Yes (2) | No   

Puja Dutta  (9 years ago)

there are 10 possible no.s i.e from 20-29

Is this solution Helpfull? Yes | No (2)  

lokesh sharma  (9 years ago)

1+1=2 exceed by 18 than it 20. similarly 1+2=21,1+3=22,1+4=23,1+5=24,1+6=25,1+7=26,1+8=27,1+9=28,2+9=29 hence no.is 9

Is this solution Helpfull? Yes | No (1)  

manikanta  (9 years ago)

zero;;;jkvbfjhvb

Is this solution Helpfull? Yes | No (1)  

apra  (9 years ago)

i think its 1 only 99 satisfy the condition i.e 9+9=18 other combination cannot exceed sum be 18

Is this solution Helpfull? Yes | No (2)  

Please Login to Read Solution.