Question
The marks of a student were entered as 88 instead of 68. Due to this, the average marks of the class increased by 0.5. What is the number of students in the class?
More HCF and LCM Questions
- Sum of the two numbers is 81 and their HCF and LCM are 9 and 180, respectively. Find the sum of reciprocal of the given two numbers.
- HCF of two numbers 65 and 104 can be expressed in the form of (40m – 107) whereas LCM of these two numbers can be expressed in the form of (60n – 20). Find...
- Four machine makes a beep after every 1, 3, 5 and2 min respectively . In 5hrs , how many times do they beep together if they have just beeped together.
- A boy can swim in still water at a speed of 8 km/hr. If the speed of the current would have been 3 km/hr, then the boy could swim 55 km
- The HCF of two numbers is 12 and their LCM is 180. If one of the numbers is 36, find the other number.
- What is the unit digit of the number 'Z' obtained by subtracting the largest two-digit prime number from the least common multiple (LCM) of all single-digi...
- The least number which when divided by 4, 8, 10 and 12 leave zero remainder in each case and when divided by 13 leaves a remainder of 9 is:
- The smallest number which when divided by 25 and 30 leaves remainder 10 and 15 respectively is:
- Find the HCF of 4/5, 8/15 and 12/25.
- Find the greatest number which when divide 25,40 & 55 leave a same remainder in each case?
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