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There are 10 coins. 6 coins showing head. And 4 showing tail. Each coin was randomly flipped (not tossed) seven times successively.after flipping the coins are 5 heads 4 tails one is hided the hided coin will have what.

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The hidden coin is head...
13 years agoHelpfull: Yes(2) No(3)

the hidden coin is obviously head coz there r 10 coins in which 6 r head n 4 are tail n wen u flip u get 5 heads n 4 tails so definitely 1 head is left out
12 years agoHelpfull: Yes(1) No(0)
the hidden coin is definately heads
9 years agoHelpfull: Yes(0) No(0)

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In a particular city there are 100 homes numbered from 1,2,3,..,100. The city was build by a builder from Chennai. There was 4 to 5 shops in the town which was build by a builder from Mumbai. The 2nd builder can build in 1½ times as compared to time by 1st builder. The 2nd builder builds in 15 days, then how many 2's are used by the builder from Chennai in
numbering the 100 homes?
(a) 17 (b) 18 (c) 19 (d) 20