Question
Out of a total of 200 students in a class, 60% are boys
and the rest are girls. Out of the total number of students who appeared in the class test, 25% failed while out of the total number of boys who appeared in the test, 50% passed the test. Find the number of girls who passed the test given that all the students in the class appeared for the test.Solution
ATQ Number of boys in the class = 200 × 0.60 = 120 Number of girls in the class = 200 – 120 = 80 Number of students who failed in the test = 200 × 0.25 = 50 Number of students who passed the test = 200 – 50 = 150 Number of boys who passed the test = 120 × 0.50 = 60 Number of girls who passed the test = 150 – 60 = 90
The product of two numbers is 504 and their HCF is 6. Total number of such pairs of numbers is?  Â
What is the unit digit of the sum of 3694 and the product of 214 and 123?
If the product of two numbers is 90 and their HCF is 6, then find the LCM of the given two numbers.
- Three numbers are in the ratio 3:5:7 respectively. If the HCF of the numbers is 4, then find the LCM of the numbers.
Let N be the greatest number that will divide 89, 110, 131 leaving the same remainder in each case. Then sum of the digits in N is:
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:
The least number which when divided by 10, 12, 15 and 20 leave zero remainder in each case and when divided by 24 leaves a remainder of 12 is:
The least number which when divided by 6,18 and 20 leave a same remainder 3 in each case?Â
Two numbers are in the ratio 3:5 and their HCF is 20. Their LCM is
The Highest Common Factor (HCF) and Least Common Multiple (LCM) of two numbers, X and Y, are given as 8 and 80, respectively. Additionally, the differen...
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