Latest TCS Aptitude Question SOLUTION: how many 2's are there between 223 to 2222?

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(#M40012363) TCS question Keep an EYE

how many 2's are there between 223 to 2222?

Asked In TCS arushi tyagi (11 years ago)

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rahul bhatiwal  (11 years ago)

in 1 to 999 there are 300 2s.and from 1000 to 1999 agian 300.and from 2000 to2222 there are 287and now we will sub 40 whic are from1 to 199...and now 25 also 200 t0 223 so ans is 823

Is this solution Helpfull? Yes (14) | No (4)  

saiyam gambhir  (11 years ago)

from 201-222 there are 28 2's
and from 201-300 there are 120 2's
so from 223-300 there are 120-28=92 2's
now from 301-1000 there are 7*20=140 2's
now from 1000-2000 there are 300 2's
now we left with 2001-2222
now consider only thousands place there are 222 2's
and from 000 to 222 there are 20+21+28=69 2's
so total=92+140+300+222+69=823ans

Is this solution Helpfull? Yes (7) | No (3)  

Nikhil  (11 years ago)

manish prasad , is it really works for all ranges

Is this solution Helpfull? Yes (3) | No (1)  

saiyam gambhir  (11 years ago)

823 is the correct ans

Is this solution Helpfull? Yes (3) | No   

chiru  (11 years ago)

any anyone xplain dis?

Is this solution Helpfull? Yes | No (4)  

Manish Prasad  (11 years ago)

2222-223=1999
1999/2=999.5
ANS=999

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sagar prakash khande  (11 years ago)

saiyam,wil u pls xpln?

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Neha Chopra  (11 years ago)

800 is the correct answer

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prachitrivedi  (11 years ago)

rahul pls explain how u know no. of 2s in any range

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nibedita mishra  (11 years ago)

@ Rahul... there are 31 2s between 200 and 223.
and 292 2s between 2000 and 2222.
SO i think it's 821..Kindly rectify if Im wrong

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