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madhu.mukherjee.946
 one year ago
find the number of numbers less than 1000 and divisible by 5 which can be formed with the digits 0 1 2 3 4 5 6 7 8 9 without repetition
madhu.mukherjee.946
 one year ago
find the number of numbers less than 1000 and divisible by 5 which can be formed with the digits 0 1 2 3 4 5 6 7 8 9 without repetition

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madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0@imqwerty fast :P

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0you are taking too long such a small sum:)

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.2a number divisible by 5 has either 5 at end or 0 at end so total such number will include all numbers of 1 digit , 2 digits... 1 digit nos are easy to count they are5 2 digits nos  we consider 2 cases one with 0 at the end and one with 5 at the end A A] 0 at the end 1st place can be filled with1,2,3,4,5,6,7,8,9 and 0 is fixed at 2nd place so total numbers=9x1=9 B]5 at end 1st place can be filled with1,2,3,4,6,7,8,9=8nos we didn't take 0 cause then it wuld be a single digit no we also didn't take 5 cause its already set at 2nd place so total nos=8x1=8 total 2 digit nos=17 3 digit nos A] 0 at end 1st place can be filled with1,2,3,4,5,6,7,8,9=9nos 2nd place can be filled with 8 nos cause 1 number will be consumed in this^ step=8nos left to fill 2nd place 3rd place has 0=1no so total combinations =9x8 B] 5 at end 1st place can be filled with1,2,3,4,6,7,8,9=8nos 2nd place can be filled with 8 nos cause we can take 0 here along with the 7 digits left after filling 1st place=8nos 3rd place has 5 =1no total nos=8x8 total 3 digit nos=72+64=136 total nos=136+17+9 =162

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0wrong answer is 154

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.2hey i did that correct i jst made calculation mistake :P its 72+64+17+1=154

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.2i wrote that 9 by mistake :)P total i digit nos=1 total 2 digit nos=17 total 3 digit nos=72+64 total=154 >.<

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0how did you get the 3 digit numbers pls explain

ribhu
 one year ago
Best ResponseYou've already chosen the best response.1the three digit numbers are obtained taking into account two cases

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0yeah 0 and 5

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0i got the 0 part just explain me the the 5 part

ribhu
 one year ago
Best ResponseYou've already chosen the best response.1first 0: the first digit can be filled with 9 choices.. second will be 8 and since 0 is fixed so we get 9*8 = 72 numbers ending in 0 with three digits

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0yeah even i got that

ribhu
 one year ago
Best ResponseYou've already chosen the best response.1see 5 is fixed.. so first digit can be filled in 8 ways..since 0 can not come in first place so second has 8 options..every number except for 5: so we have 8*8 = 64

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0yeah thank you so much i got that

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0even i calculated this way and found out .mine answer matches with u

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0thanks imqwerty : today i saw u sitting on top of the roof of your school with a monkey:P @imqwerty

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0:)))))))))))))))

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.2(: that monkey ws talkin wid me abt u

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0ahhhhhhhhhhhhh

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.2yea :) he ws tellin that u 2 made a plan to go out but i came in middle e.e

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0ooo very funny:P

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.2shuld i leave u 2 alone or be here e.e

madhu.mukherjee.946
 one year ago
Best ResponseYou've already chosen the best response.0@imqwerty i'll kill you

imqwerty
 one year ago
Best ResponseYou've already chosen the best response.2omg looool XD please kill me fast
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