[kingnitin]

Q2. At how many points between 10 O'clock and 11 O'clock are the minute hand and hour hand of a clock at an angle of 30 degrees to each other?

(1)2(2)4(3)1(4)3

[kingnitin]

Originally Posted by viccy_776

1-100 11 zeroes

101 -999 (3 digit number can be of form) ab0;a0b;a00

total number of zeroes 9*9 +9*9+9*2 = 180

for 1000-9999 (numbers can be of form)

abc0;ab0c;aobc;ab00;a00b;a0b0;a000

total number of zeroes= 729*3+81*2*3 +3*9 = 2673+27 = 2700

hence total zeroes - 2700 +180+3 = 2883


nitin plz confirm the answer

Ans is 2893

[viccy_776]

yaa made a mistake while adding.

unique already pointed that /.

[kingnitin]

Originally Posted by kingnitin

Another one:

How often between 11 O'clock and 12 O'clock are the hands of the clock an integral number of minutes apart?

Noone has tried these?????..Kya pata is baar Clocks and calendar se hi 5-10 number ka aa jaye..c'mon guys

[ashish banaya..]

Originally Posted by kingnitin

Noone has tried these?????..Kya pata is baar Clocks and calendar se hi 5-10 number ka aa jaye..c'mon guys

my ans.
1)is it 30 times....vey unsure about this
2)Twice
Lemme know the ans.,will post the solutions accordingly