clock problems - Wikitechy https://www.wikitechy.com/interview-questions/tag/clock-problems/ Interview Questions Sat, 18 Sep 2021 07:10:51 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png clock problems - Wikitechy https://www.wikitechy.com/interview-questions/tag/clock-problems/ 32 32 Find the non leap year in between 1801 to 1900 ? https://www.wikitechy.com/interview-questions/calendar/find-the-non-leap-year-in-between-1801-to-1900/ https://www.wikitechy.com/interview-questions/calendar/find-the-non-leap-year-in-between-1801-to-1900/#respond Tue, 17 Aug 2021 18:31:31 +0000 https://www.wikitechy.com/interview-questions/?p=1869

Find the non leap year in between 1801 to 1900 ?

Answer : 76

Explanation

  • The important 3 ways is used to find the leap years,
    • The year is evenly divisible by 4
    • If the year can be evenly divided by 100, it is NOT a leap year.
    • If the year is also evenly divisible by 400. Then it is a leap year.
  • So by these rules, the years 400, 404, 408, 800, 896, 1200, 1600, 2000, 2004 and so on are leap years, while 500, 600, 700.. 1100, 2100 aren’t leap years as they aren’t divisible by 400( though divisible by 4 and 100)
  • Between 1795 and 1805 the leap years were 1796 and 1804. 1800 wasn’t a leap year. And between 1995 and 2005 the leap years were 1996, 2000 and 2004.
  • So by this logic NOT ALL 100 years have 24 leap years and 76 non-leap years.
  • For example: Years 1801 – 1900 had 24 leap years:
1804, 1808, 1812, 1816, 1820, 1824, 1828, 1832, 1836, 1840, 1844, 1848, 1852, 1856, 1860, 1864, 
1868, 1872, 1876, 1880, 1884, 1888, 1892, 1896.
]]> https://www.wikitechy.com/interview-questions/calendar/find-the-non-leap-year-in-between-1801-to-1900/feed/ 0 One quarter of the time till now from midnight and half of the time remaining from now up to midnight adds to the present time. What is the present time ? https://www.wikitechy.com/interview-questions/clock/one-quarter-of-the-time-till-now-from-midnight-and-half-of-the-time-remaining-from-now-up-to-midnight-adds-to-the-present-time-what-is-the-present-time/ https://www.wikitechy.com/interview-questions/clock/one-quarter-of-the-time-till-now-from-midnight-and-half-of-the-time-remaining-from-now-up-to-midnight-adds-to-the-present-time-what-is-the-present-time/#respond Tue, 17 Aug 2021 08:27:19 +0000 https://www.wikitechy.com/interview-questions/?p=1704

One quarter of the time till now from midnight and half of the time remaining from now up to midnight adds to the present time. What is the present time ?

A. 9:38

B. 9:56

C. 9:36

D. 9:16

Answer : C. 9:36

Explanation:

x is present time 1/4 (x) + 1/2 (24-x) = x solve it then x = 9:36

]]> https://www.wikitechy.com/interview-questions/clock/one-quarter-of-the-time-till-now-from-midnight-and-half-of-the-time-remaining-from-now-up-to-midnight-adds-to-the-present-time-what-is-the-present-time/feed/ 0 How many palindromes are there in a clock from noon to midnight ( For Example 5.45 is a palindrome) ? https://www.wikitechy.com/interview-questions/clock/how-many-palindromes-are-there-in-a-clock-from-noon-to-midnight-for-example-5-45-is-a-palindrome/ https://www.wikitechy.com/interview-questions/clock/how-many-palindromes-are-there-in-a-clock-from-noon-to-midnight-for-example-5-45-is-a-palindrome/#respond Tue, 17 Aug 2021 08:24:42 +0000 https://www.wikitechy.com/interview-questions/?p=1703

How many palindromes are there in a clock from noon to midnight ( For Example 5.45 is a palindrome) ?

A. 43

B. 51

C. 57

D. 58

Answer : C. 57

Explanation:

Palindromes after 12 o’clock 12:21 = 1
From 1 to 9 , it is 1.01, 1.11, 1.21, 1.31, 1.41, 1.51 = 6, similarly 2.02, 2.12…= 6
So, total palindromes from 1 to 9 is (6 * 9) 54.
Palindromes after 10 o’clock are 10:01 and 11:11
Hence total number of palindromes from noon to midnight : 54 + 1 + 2 = 57

]]> https://www.wikitechy.com/interview-questions/clock/how-many-palindromes-are-there-in-a-clock-from-noon-to-midnight-for-example-5-45-is-a-palindrome/feed/ 0 Between 9 a.m and 9 p.m of a particular day for how many times are the minute and hour hands together ? https://www.wikitechy.com/interview-questions/clock/between-9-a-m-and-9-p-m-of-a-particular-day-for-how-many-times-are-the-minute-and-hour-hands-together/ https://www.wikitechy.com/interview-questions/clock/between-9-a-m-and-9-p-m-of-a-particular-day-for-how-many-times-are-the-minute-and-hour-hands-together/#respond Tue, 17 Aug 2021 08:22:31 +0000 https://www.wikitechy.com/interview-questions/?p=1702

Between 9 a.m and 9 p.m of a particular day for how many times are the minute and hour hands together ?

A. 11

B. 12

C. 13

D. 9

Answer : A. 11…

Explanation:

  • The hands will be together for once per hour (e.g 9.45, 10.50.) but between 11 and 12 the coming together will be counted as 1 for both hence in 12 hrs time they will be together for 12-1 = 11 times.
]]> https://www.wikitechy.com/interview-questions/clock/between-9-a-m-and-9-p-m-of-a-particular-day-for-how-many-times-are-the-minute-and-hour-hands-together/feed/ 0 The famous church in the city of Kumbakonam has a big clock tower and is said to be over 300 years old. Every Monday 10.00 AM the clock is set by Antony, doing service in the church. The Clock loses 6 minutes every hour. What will be the actual time when the faulty clock shows 3 P.M on Friday ? https://www.wikitechy.com/interview-questions/clock/the-famous-church-in-the-city-of-kumbakonam-has-a-big-clock-tower-and-is-said-to-be-over-300-years-old-every-monday-10-00-am-the-clock-is-set-by-antony-doing-service-in-the-church-the-clock-loses-6/ https://www.wikitechy.com/interview-questions/clock/the-famous-church-in-the-city-of-kumbakonam-has-a-big-clock-tower-and-is-said-to-be-over-300-years-old-every-monday-10-00-am-the-clock-is-set-by-antony-doing-service-in-the-church-the-clock-loses-6/#respond Tue, 17 Aug 2021 08:10:02 +0000 https://www.wikitechy.com/interview-questions/?p=1700

The famous church in the city of Kumbakonam has a big clock tower and is said to be over 300 years old. Every Monday 10.00 AM the clock is set by Antony, doing service in the church. The Clock loses 6 minutes every hour. What will be the actual time when the faulty clock shows 3 P.M on Friday ?

A. 1.10 am

B. 1.40 am

C. 12.10 am

D. 12.10 pm

Answer : A. 1.10 am

Explanation:

  • Let us start from Monday 10 am to friday 3.00 pm , total hours = 4 days 5 hrs(4*24+5 = 101 hrs).
  • Clock lose per hour = 6 min, so total time loses is 101 * 6minutes = 606 minutes (10 hrs 10 minutes ).
  • So actual time = Friday 3.00 pm + 10 hrs 10 minutes = saturday 1.10 am.
]]> https://www.wikitechy.com/interview-questions/clock/the-famous-church-in-the-city-of-kumbakonam-has-a-big-clock-tower-and-is-said-to-be-over-300-years-old-every-monday-10-00-am-the-clock-is-set-by-antony-doing-service-in-the-church-the-clock-loses-6/feed/ 0 What is the angle between two hands when time is 5:30 ? https://www.wikitechy.com/interview-questions/clock/what-is-the-angle-between-two-hands-when-time-is-5-30/ https://www.wikitechy.com/interview-questions/clock/what-is-the-angle-between-two-hands-when-time-is-5-30/#respond Tue, 17 Aug 2021 08:07:55 +0000 https://www.wikitechy.com/interview-questions/?p=1699

What is the angle between two hands when time is 5:30 ?

A. 20 degree

B. 18.75 degree

C. 160 degree

D. 15 degree

Answer : D. 15 degree

Explanation:

  • At 5:30 minute hand will be at position 6 and hour hand will be exactly between 5 and 6 and will cover 15°, so angle between two hands=30 -15 = 15°.
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