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How many 5’s will be there in the number 121122123... till 356?
Read Solution (Total 5)
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- 121122123... till 356
121,122,123,124... till 356
121 to 200 => 125,135,145, from 150 to 159 => 11 5's , 165,175,185,195
[from 150 to 159, each no. has 1 no. of 5 except 155, 155 has 2 no. of 5]
total=18
201 to 300 => 205,215,225,235,245, 250 to 259 => 11 5's , 265,275,285,295
=> total=20
301 to 356 => 305,315,325,335,345,350,351,352,353,354,355(2 5's),356
=> total=13
total 5's = 18+20+13 = 51 - 10 years agoHelpfull: Yes(74) No(2)
- 51
150-159=11 5's
250-259=11 5's
350-356=8 5's
125,135,145,........345=21 5's - 10 years agoHelpfull: Yes(3) No(8)
- 123 to 356
125, 135, 145, 150 to 159 total 11 5's, 165, 175, 185, 195, 205, 215, 225, 235, 245, 250 to 259 total 11 5's, 265, 275, 285, 295, 305, 315, 325, 335, 345, 350, 351, 352, 353, 354, 2 5's in 355, 356 - 10 years agoHelpfull: Yes(2) No(6)
- 52 5s are there
- 10 years agoHelpfull: Yes(0) No(4)
- .........
46
- 8 years agoHelpfull: Yes(0) No(3)
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