Quiz 1

To complete 31 days along with restriction we must start October with Tuesday,hence it ends on Thursday.
Thus, Month of November starts with Friday,
therefore 20th of
November is Wednesday

The clock strikes for the first time at the start and
takes 7 seconds for 6
intervals-thus for one interval time taken=7/6. Therefore,

for 10 seconds there
are 9
intervals and
time taken is 9*7/6=10 and 1/2 seconds.

for first strike there is no time needed.
so other 5 strikes need 30 secs.
So,each takes as (30/5)=6 secs.

Same at 12 o’clock,11 strikes time = (11*6)=66 secs.

There are 180 minutes between 3 o’clock and 6 o’clock.

Call x the number of minutes to 6 o’clock.

Then it is 180 – x minutes past 3 o’clock and 50 minutes ago
it was 130 – x minuted past 3 o’clock.

Using the 4 times as many minutes past three o’clock bit we can form
the equation

130 – x = 4x and solve it
130 = 5x
x = 26 so yes it is 26 minutes.

It is not given that any clock or watch loses or
gains time in any specific period.

When they are adjusted at noon, the time shown
in wrist watch at 6 PM will be 6 PM only

Week off for nurse 1 already given
Week off for nurse 2 Monday wednesday saturday
Week off for nurse 3 Wednesday thursday Sunday

Whenever you solve this type of problems, remember these points:

1. The total angle in a clock is 360°


2. The minute hand covers this 360° in 60 minutes. Thus, for every minute it covers 6°


3. The hour hand covers this 360° in 12 hours. Thus, in each hour it covers 30°

Now let us solve the question.

1. The minute had has travelled for 30 minutes. So, it has covered 30×6=180°


2. The hour hand has travelled for 6.5 hours. So, it has covered 6.5×30=195°


3. The difference between the two will give the angle between the two hands. Thus, the required angle=195°-180°=15°

100th year is not a leap year. So 24 February’s has
29 days

The year 2004 is a leap year. So, it has 2 odd
days.
But, Feb 2004 not included because we are
calculating from April 2004 to April 2005.
Thus, it has 1 odd day only.
The day on 8th April, 2005 will be 1 day beyond
the day on 8th April, 2004.

Given that, 8th March, 2005 is Monday.
8th March, 2004 is Sunday (1 day before to 8th March, 2005).

In 12 hours, they are at right angles 22 times.
Therefore, in 24 hours, they are at right angles 44
times.