Home›MPPSC Prelims›Paper 2: General Aptitude Test (CSAT)›General Aptitude›Basic Numeracy and Data Interpretation›Basic Numeracy: Numbers and their Relations, Order of Magnitude (Class X level)›In a month of 30 days, the last day is Saturday. What will be the

In a month of 30 days, the last day is Saturday. What will be the date on the fourth Tuesday of that month ?

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A.(A) 20
B.(B) 21
C.(C) 25
D.(D) 26Correct
Explanation & Solution

The correct answer is (D) 26.

Step-by-step calendar calculation:

  • Given: 30th day of the month is a Saturday.
  • Counting backwards to find the days of the week:
  • 30th = Saturday, 29th = Friday, 28th = Thursday, 27th = Wednesday, 26th = Tuesday.
  • Since 26th is a Tuesday, all Tuesdays of that 30-day month occur on:
  • 1st Tuesday: 26−21=5th26 - 21 = 5th\text{th}th26−21=5th
  • 2nd Tuesday: 5+7=12th5 + 7 = 12th\text{th}th5+7=12th
  • 3rd Tuesday: 12+7=19th12 + 7 = 19th\text{th}th12+7=19th
  • 4th Tuesday: 19+7=<strong>26th</strong>19 + 7 = <strong>26th\text{th}th</strong>19+7=<strong>26th</strong>.

हिंदी में प्रश्न एवं आदर्श उत्तर

30 दिवसों के किसी माह में, अंतिम दिवस शनिवार है। इस माह के चौथे मंगलवार को क्या दिनांक होगा ?

A.(A) 20
B.(B) 21
C.(C) 25
D.(D) 26सही

सही उत्तर (D) 26 है।

कैलेंडर की चरणबद्ध गणना:

  • दिया गया है: माह का अंतिम (30वाँ) दिन शनिवार है।
  • पीछे की ओर गणना करने पर:
  • 30 तारीख = शनिवार, 29 तारीख = शुक्रवार, 28 तारीख = गुरुवार, 27 तारीख = बुधवार, 26 तारीख = मंगलवार।
  • अतः इस माह के सभी मंगलवार निम्नलिखित तिथियों को पड़ेंगे:
  • पहला मंगलवार: 26−21=526 - 21 = 526−21=5 तारीख
  • दूसरा मंगलवार: 5+7=125 + 7 = 125+7=12 तारीख
  • तीसरा मंगलवार: 12+7=1912 + 7 = 1912+7=19 तारीख
  • चौथा मंगलवार: $19 + 7 = 26 तारीख।
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