Question
40 pens are there in a box where 22 are red pens,
‘p’ are blue pens and remaining are black pens. If a pen is picked, the probability of getting blue pen is 0.25. Find the ratio of the number of blue pens and black pens.Solution
Probability of getting a blue pen , => p/40 = 1/4 => p = 10 So, number of black pens = 40 – 10 – 22 = 8 Required ratio = 10 : 8 = 5:4
The Reserve Bank of India (RBI) has notified that nearly 97.38 per cent of the Rs 2,000 bank notes have been returned to the banking system. According t...
Who has been appointed as the Secretary (at the Director level) of the National Jute Board in Kolkata?
World Physiotherapy Day has been observed globally since which year?
Who has won prestigious German Peace Prize 2023?
What is the total investment planned for Bhutan’s largest solar project by Reliance Power and DHI?
What is the name of the campaign launched by the Reserve Bank of India to settle the unclaimed deposits of every bank in every district of the country w...
How many geothermal provinces have been identified under India’s National Geothermal Energy Policy?
Which two Indian states will be connected by India's first bullet train?
Which organization signed an MoU with the Government of Gujarat for a Rs 4000 crore investment in the Kuppa Hydro project?
SoftBank has sold 2 percent of its shares in One97 Communications, the parent firm of Paytm.After the latest sale, SoftBank’s stake in the company is ...
Relevant for Exams:
