sir,
pl. help me to solve following problems of permutation & combination-


Q1. how many divisors of 9000 are even but not divisible by 4?also find the sum of such nos.



Q2. the no. of ways an examiner can assign 30 marks to 8 ques., awarding not less than 2 marks to any ques. is

in a physics laboratory a block x is balanced by a block Y of mass 200 kg,each are suspended from a balance of equal lever arms .the scale pan on X is at a height.H1=2 cm ,where as scale pan on Y is at height 1 cm above the floor.the error in weighing is (in gram)

consider the figure of a single riveted lap joint as follows

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cyclic heat engine operates between. temperature of 30 C. What is the least rate of heat rejection per kW net output of an engine. source temperature of 800 C and sink

 

 

Hello,

 

Can we learn and prepare for MHT-CET online ?