Question
Five different pens out of which 2 are red and the rest
are blue are to be arranged in a line. Find the number of ways in which the two red pens are not placed together.Solution
Total number of ways to arrange 5 pens = 5! = 120 ways
If we consider 2 red pens as one item, number of arrangements = 2! = 2 ways
Number of arrangements of remaining 4 items = 4! = 24 ways
Therefore, required number of ways = 120 – (2 × 24) = 72 ways
Where are the headquarters of Fitch Ratings ?
The Union Cabinet approved the infusion of ₹10,700 crore equity into which organization for working capital?
How many medals did India win at the 2025 Asian Para-Badminton Championships in Thailand?Â
What was India's total foreign exchange (forex) reserves as of January 17, 2025
In which year did the establishment of the Insurance Regulatory and Development Authority of India (IRDAI) take place?
Who won the British Grand Prix 2025, marking a dream victory at Silverstone?Â
- India’s first underwater metro project was inaugurated in which city?
'WMO Provisional State of the Global Climate 2022' released by which of the following international organisation?
The Insolvency and Bankruptcy Code (IBC) was enacted in which year?
In the 2024 World Talent Ranking by the International Institute for Management Development (IMD), what position did India secure?