All About IBPS PO officer / Clerk #!# Detailed Information

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The details about three atoms X,Y and Z are given. Given information about their atomic number mass number and valency?

in an ofice, the ratio of the salary of an officer to that of a clerk is 25:9. if the salary of the clerk is Rs 10000 less than that of the officer, then what is the salary o the officer?

A finance company has offices located in ewery division, every didtrict and every taluka in a certain state in India. Assume that there are five divisions, thirty districts and 200 talukas in the state. Each office has one head clerk, one cashier, one clerk and one peon. A divisional office has, in addition, one office superntendent, two clerks, one typist and one poen. A district office, has in addition, one clerk and one peon. The basic monthly salaries are as follows : Office superintendernt Rs 500, Head clerk Rs 200, cashier Rs 175, clerks and typist Rs 150 and peon Rs 100. Using matrix motation find the total basic monthly salary bill of each kind of office

From 4 officers and 8 clerks, in how many ways can 6 be chosen (i) to include exactly one officer, (ii) to include at least one officer?