Calendar & Clock

LSSSSB Non-Technical · Reasoning · 34 practice questions with answers and explanations: 14 Easy, 18 Medium, 2 Hard.

Sample questions

Sample Easy question 1

If today is Wednesday, what day will it be after 10 days?

  1. Sunday
  2. Monday
  3. Saturday
  4. Friday
Show answer

Answer: C. 10 mod 7 = 3, so the day shifts by 3: Wednesday + 3 = Saturday.

Sample Easy question 2

If today is Monday, what day will it be after 8 days?

  1. Tuesday
  2. Wednesday
  3. Thursday
  4. Monday
Show answer

Answer: A. 8 days = 1 week + 1 day, so it will be one day after Monday: Tuesday.

Sample Easy question 3

If today is Friday, what day was it 15 days ago?

  1. Saturday
  2. Friday
  3. Wednesday
  4. Thursday
Show answer

Answer: D. 15 days = 2 weeks + 1 day; going back 1 extra day from Friday gives Thursday.

Sample Medium question 4

At what time between 4 and 5 o'clock will the hour and minute hands of a clock coincide?

  1. 4:22
  2. 4:21 9/11
  3. 4:20
  4. 4:24
Show answer

Answer: B. The hands coincide when 30H = 5.5M, so M = 30(4)/5.5 = 21 9/11 minutes past 4.

Sample Medium question 5

If January 1, 2001 was a Monday, what day of the week was January 1, 2002 (2001 was not a leap year)?

  1. Monday
  2. Wednesday
  3. Sunday
  4. Tuesday
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Answer: D. A non-leap year has 365 days = 52 weeks + 1 day, so the next January 1 falls one day later: Tuesday.

Sample Medium question 6

A clock loses 15 minutes every 24 hours. If it is set correctly at 12:00 noon, what time will it show after exactly 24 real hours?

  1. 11:50 AM
  2. 11:40 AM
  3. 11:30 AM
  4. 11:45 AM
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Answer: D. A clock that loses 15 minutes every 24 hours will show 12:00 noon minus 15 minutes = 11:45 AM after 24 real hours.

Sample Hard question 7

The calendar for the year 2023 is the same as which of the following years, given that 2023 was not a leap year and started on a Sunday? (Assume 2034 also starts on a Sunday and is not a leap year.)

  1. 2032
  2. 2030
  3. 2028
  4. 2034
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Answer: D. Two non-leap years have the same calendar when they start on the same day of the week with no leap year disrupting the day-count in between; here 2034 is given as matching 2023's start day.

Sample Hard question 8

A clock is set right at 8 am and gains 10 minutes every 24 hours. What will be the true time when the clock indicates 8 pm the same day?

  1. 8:05 pm
  2. 7:55 pm
  3. 7:50 pm
  4. 8:00 pm
Show answer

Answer: B. 12 hours of clock time corresponds to slightly less true time given the gain, working out to approximately 7:55 pm.

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