sachi

Arnold is 10 yeras older than his brother richard. In 10 years richard will be 3/4as old aas arnold. how old is ecah one?

A plastic sphere has a density that is greater than oil but less than water when itis placed in cylinder containing water, it is exactly half submerged, explain why when oil poured on top of water. The sphere is only 1/4 submerged in water.

The earth complete one reoolution round the sun in 365 1/4 days answer Hindi

find p so that p+5,2p+1,4p-1,... form an arithmetic sequence