Question
48 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/48 = 1/4 => p = 12 So, number of black pens = 48 – 22 – 12 = 14 Required ratio = 12 : 14 = 6:7
The ratio of two number is 6 : 5 and their HCF is 15. So find and their LCM?
Determine the HCF of 150 and 1350.
- The product of two numbers is 198 and their HCF is 11. What is the LCM of these two numbers?
Let N be the greatest number that will divide 85, 116, 147 leaving the same remainder in each case. Then sum of the digits in N is:
Find difference between the LCM and HCF of 14, 42 and 77.
LCM of two numbers is 56 times their HCF, with the sum of their HCF and LCM being 1710. If one of the two numbers is 240, then what is the other number?
Find the least number of four digits which is exactly divisible by 6, 8 and 16?
If total number of factors of 1,800 is 'x', then find the value of (x - 8) (x + 4).
