IBM Company Numerical Ability LCM and HCF

Let p and q be two prime numbers such that p is greater than q. If 319 is their LCM then the difference of thrice of q and p is:

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IBM Other Question

A company has offices in two different buildings. 50% of the copying machines in the first building

and 28% of the copying machines in the second building received preventive maintenance last

month. If 87% of the company’s copying machines are in the first building, what percent of all the

copying machines received preventive maintenance last month?
A complete binary tree with the property that the value at each node is atleast as large as the values at its children is known as..

a)binary search tree
b)AVL tree
c)completely balanced tree
d)Heap