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  • Question
  • On what dates of April, 2001 did Friday fall?


  • Options
  • A. 5th, 12th, 19th, 26th April
  • B. 4th, 11th, 18th, 25th April
  • C. 3rd, 10th, 17th, 24th April
  • D. None of these

  • Correct Answer
  • None of these 

    Explanation

    Lets find out 1st April from Zeller's Formula:
    f = k + [13 x m - 1 / 5] + D + [D/4] + [C/4] - 2 x C.
    In this case k = 1 (since 1st April)
    Month m = 2 (As march = 1, April = 2)
    D is the last two digit of year here D = 01 (As year is 2001)
    C is 1st two digit of century here C = 20 (As year is 2001)
    f = 1 + [13 x 2 - 1 / 5] + 01 +[01/4] + [20/4] -2 x 20
    f = 1 + [25/5] + 01 + [0.5] + [5] - 40.
    f = 1 + 5 + 01 + 0 + 5 - 40 = -28
    This - ve value of f can be made positive by adding multiple of 7
    So f = - 28 + 28 = 0
    So number of odd days is 0,
    So 1st April 2001 is Sunday,
    So 1st Friday is on 6th April , so next Fridays is 13th, 20th, 27th April.


  • More questions

    • 1. 
      0.0169 / 0.013=?

    • Options
    • A. .13
    • B. .013
    • C. 1.3
    • D. 13
    • Discuss
    • 2. 
      Two posts are x meter apart and the height of one is double that of the other. If from the midpoint of the line joining their feet, an observer finds the angular elevations of their tops to be complementary, then the height (in meter) of the shorter post is :

    • Options
    • A. x 2 ?2
    • B. x 4
    • C. x ?2
    • D. x ?2
    • Discuss
    • 3. 
      If p/q =4/5, then the value of 4/7 + {(2q - p) / (2q + p)} is?

    • Options
    • A. 3 / 7
    • B. 34
    • C. 1
    • D. 2
    • Discuss
    • 4. 
      What is 25% of 25% is equal to?

    • Options
    • A. 6.25
    • B. .625
    • C. .0625
    • D. .000625
    • Discuss
    • 5. 
      The number .05 is hoe many percent of 20?

    • Options
    • A. 25
    • B. .025
    • C. .25
    • D. 2.5
    • Discuss
    • 6. Find the lowest common multiple of 24, 36 and 40.

    • Options
    • A. 120
    • B. 240
    • C. 360
    • D. 480
    • Discuss
    • 7. 
      8 1/ 3% expressed as a fraction is?

    • Options
    • A. 25/3
    • B. 3/25
    • C. 1/12
    • D. 1/4
    • Discuss
    • 8. 
      .025 in terms of term of rate per cent is?

    • Options
    • A. .25%
    • B. 2.5%
    • C. 0.25%
    • D. 371/2%
    • Discuss
    • 9. 
      What percentage of 2/7 is 1/35?

    • Options
    • A. 2.5%
    • B. 10%
    • C. 25%
    • D. 20%
    • Discuss
    • 10. 
      A sum of ? 4000 is lent out in two parts, one at 8% simple interest and other at 10% simple interest. If the annual interest is ? 352, the sum lent at 8% is

    • Options
    • A. ? 1600
    • B. ? 2400
    • C. ? 1800
    • D. ? 2800
    • Discuss


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