Question
There are thirty balls in my cupboard in complete
disarray. Ten are black, ten are red and ten are brown, but I cannot distinguish the colors in the dark. How many balls should I take from the cupboard so that there is at least one pair of the same color?Solution
Total number of balls = 30 There are 3 colored balls present in 30 balls. When we take out 3 balls, there is a possibility that all three balls may be of different colors. But when we take out 4 balls (at least), then two balls of one color will come out. Hence, there will be a pair of the same color present in 4 balls.
Which state led the assessments in Phase 1 of the Khelo India Rising Talent Identification (KIRTI) program?
When did the Mahatma Gandhi Institute (MGI) in Mauritius begin its operations?
- What technological innovation helped RBI win the Central Banking Digital Transformation Award 2025?
- Which country is finalizing a Joint Crediting Mechanism (JCM) with India for emission-reduction credits?
What is the notice period required to introduce a private member's bill in the Lok Sabha?Â
Which state became the second in India to be declared fully functionally literate under ULLAS?
What is the primary focus of the "Baltic Sentry" mission launched by NATO?
Which automobile company and the food order delivery platform, Zomato have come together in a strategic association to ensure a green and sustainable m...
What rank did India achieve in the Henley Passport Index 2025?
What is the key focus of Clause 6 of the Assam Accord, which was discussed between the Assam government and AASU?
Relevant for Exams:
