Question
A bag contains 4 red balls, 5 blue balls, and 3 green
balls. Two balls are drawn randomly. What is the probability that both are blue?Solution
Total balls = 4 + 5 + 3 = 12. Total ways to choose 2 balls = 12C2 = 66. Ways to choose 2 blue balls = 5C2 = 10. Probability = 10 / 66 = 5 / 33. Correct Option: d
Find the difference between sum of digits of LCM and HCF of 16, 40 and 64.
The HCF of two numbers is 12. If their product is 1728, then how many such pairs exist?
- Determine the HCF of 60, 90 and 150
The LCM of two numbers is 5 times their HCF. The sum of LCM and HCF is 180. If one of the numbers is 150, then the other number is
LCM of two prime numbers 'x' and 'y' is 437 where x < y. Find the value of 'y'.
The HCF of two numbers 144 and 2160 is:
A car moves 144 km in 4 hours. The bike goes 1.5 m/s slower than the car. What distance (in metres) does the bike cover in 6 minutes 20 seconds?
Determine the HCF of 150 and 1350.
The HCF and LCM of two consecutive even number is 2 and 112 respectively. Find the sum of reciprocal of these two numbers?
The LCM of two natural numbers is 10 times their HCF. If the product of given two numbers is 1000, then find the LCM of the numbers.Â
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