For the following questions answer them individually
The LCM of two numbers x and y is 20. Find the number of unordered pairs (x,y)?
The largest number that divides 43, 91 and 183 and leaves the same remainder in each case is
In a church, the first bell rings at intervals of 2 seconds, the second bell rings at intervals of 4 seconds and so on till the fifth bell, which rings at intervals of 10 seconds. How many times do all the bells ring together in a half-an-hour period?
What is the smallest number which when multiplied by 10 is exactly divisible by 12, 18, 24 and 32?
The ratio of two numbers is 5:6. The product of the HCF and LCM of the two numbers is 120. What is the HCF of the two numbers?
The sum of two numbers is 65 and the HCF of the two numbers is 5. If the LCM of the two numbers is 180, what is the sum of the reciprocals of the two numbers?
What is the greatest number which divides 1070 and 1265 and leaves remainders 3 and 4 respectively?
$$ 125^{4} \div 25^{4} * 5 ^{5} = 5 ^{?} $$
$$ \frac{1}{7}$$ of $$2\frac{5}{8} \div \frac{3}{4} + \frac{1}{3} + \frac{1}{6}$$
Day-wise Structured & Planned Preparation Guide
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