Question
Two fair dice are thrown. What is the probability that
the sum is a prime number?Solution
ATQ, Possible sums that are prime: 2, 3, 5, 7, 11 Count ways: Sum 2: (1,1) -> 1 way Sum 3: (1,2),(2,1) -> 2 ways Sum 5: (1,4),(2,3),(3,2),(4,1) -> 4 ways Sum 7: (1,6),(2,5),(3,4),(4,3),(5,2),(6,1) -> 6 ways Sum 11: (5,6),(6,5) -> 2 ways Total favourable = 1 + 2 + 4 + 6 + 2 = 15 Total outcomes = 6*6 = 36 Probability = 15/36 = 5/12
Where is the 14th Edition of the Indo-US Joint Special Forces exercise "VAJRA PRAHAR 2023" taking place?
Which company initiated clinical trials for the Tuberculosis vaccine MTBVAC on adults in India?
Who inaugurated the Humayun's Tomb World Heritage Site Museum in New Delhi?
Which Indian city was ranked as the most affordable major city for housing in 2024?
Which upcoming port in Maharashtra has been approved under the PM Gatishakti programme?
According to the Television (TV) Rating Policy 2026 notified by the MIB, what is the revised minimum net worth requirement for a company to register as ...
The Bureau of Indian Standards (BIS) notified specifications for E22, E25, E27, and E30 fuel blends in May 2026. What does E30 refer to?
Two hill ranges Gandachera and Atharamura have been renamed in Kokborok as Ganda Tuisa and Hachuk Berem respectively. These hill ranges are in ______.
What is the valuation of Rahul Bhatia and Rakesh Gangwal, co-founders of IndiGo, as per the Hurun India 2025 list?
National Investment and Infrastructure Fund Limited (NIIFL) currently manages three separate funds, which are registered as Alternative Investment Fund ...
Relevant for Exams:
