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In T.Nagar the building was numbered from 1 to 100.Then how many 4’s will be present in the numbers?

Read Solution (Total 5)

20 fours will be there.

4, 14, 24, 34, 40, 41, 42, 43, [44], 45, 46, 47, 48, 49, 54, 64, 74, 84 and 94.

44 having 2 fours. So 18+2 = 20 fours
12 years agoHelpfull: Yes(25) No(2)

@sivakumar, the answer is 20, 44 in the series counts 4 for 2 times
12 years agoHelpfull: Yes(8) No(1)
19 4's will be there.
4, 14,24,34,40,41,42,43,44,45,46,47,48,49,54,64,74,84 and 94
12 years agoHelpfull: Yes(1) No(15)
12 4s are there
12 years agoHelpfull: Yes(0) No(18)
ans :21
4,14,24,34,40to49,54,64,74,84,94

totally 20 and in 40to 49 there are 11 numbers because 44 having two 4's so totally 21
12 years agoHelpfull: Yes(0) No(3)

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