Pipe and cisterns problem tricks in hindi | fast track arithmetic formulae for competitive examination.

PIPE AND CISTERNS   ( नल एवं टंकी ) नीचे कुछ अंकगणितिय सूत्र दिए गए हैं, जो नल व टंकी के संदर्भ में पूछे गए सवालों को आसान बनाते है। ये…

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Volume and surface area | short tricks and fast track arithmetic formulae in Hindi

आयतन तथा पृष्ठिय क्षेत्रफल (VOLUME AND SURFACE AREA) 1). यदि किसी गोले, घनाभ, घन, बेलन तथा शंकु के आयतन में सम्मिलित तीनों कोरो या विमाओ में क्रमशः x%, y% व…

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Area and perimeter | short – tricks and fast track arithmetic formulae in Hindi

क्षेत्रफल एवं परिमाप (AREA AND PERIMETER) 1). a भुजा वाले संबाहू त्रिभुज के अंत:वृत की त्रिज्या तथा क्षेत्रफल होता है। = a/2√3 तथा πa^2/12 2). a भुजा वाले संबाहु त्रिभुज…

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SIMPLE INTEREST | fast track arithmetic formulae | shortcut tricks for all competitive examination.

ARITHMETIC FORMULAE ON SIMPLE INTEREST 1). Principle = Simple interest ×100/rate×Time 2). Simple interest = principle × rate × time/100 3). Rate = simple interest ×100/principle × time 4). Time…

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Fast track arithmetic formulae on DISCOUNT | shortcut tricks for all competitive examination.

ARITHMETIC FORMULAE ON DISCOUNT 1). Discount = marked price - selling price 2). Selling price = marked price - discount 3). Marked price = selling price + discount 4). Discount…

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