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sir can u please tell me....how to solve new method of coding and decoding

The explantion in the solution is bit nebulous. Can someone explain me in a more lucid way

Why this solution does not work? What is the conceptual gap here?

Since two opening are for women only so two out of  6 are selected in 6c2 ways. Then for the remaining two openings out of 9 men and 4 women , 2 are selected which can be done in 13c2 ways. so total of 1170 ways.

Where to study the GK portion for SBI PO mains exam?

why aren't there daily practice questions in various subjects as there r in other apps for free?
like tough ones....daily quizzes n ol

Is there any process of solving the profit n loss problems without forming the conventional equations??

How to prepare sbi po

Answer= 170

How do I solve this ?

Answer= 24