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Pipe and Cistern Concept

by | Jun 8, 2025 | Uncategorized

                             Pipe & CisternConcept: In this chapter to solve problems of pipe and cistern the concept used is very same to the concept used in chapter of Time &...

Time Speed and Distance Concept

by | Jun 7, 2025 | Uncategorized

                       Time Speed & DistanceConcept:- ● Distance = Speed × Time● Average Speed = (frac{{Total;distance;covered}}{{Total;time;taken}}) ● A man covers a certain distance with S₁ km/h & come back with y km/h. He takes t hours to go and come...

Permutation and Combination Concept

by | Jun 7, 2025 | Uncategorized

1. Permutation & Combination (i) Introduction of Selection/Combination (ii) Number of ways of selecting ‘r’ articles from ‘n’ distinct article (iii) Number of ways of selecting ‘r’ articles from ‘n’ distinct articles...