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Interesting Facts About Animals

Iss fruit ke baare mein jaano ye Interesting fact..!!

An interesting fact about equivalent fractions

A sum of Rs 1000 is invested at 8% simple interest per year.Calculate the interest at the end of each year.Do these interests form an AP? If so,find the interest at the end of 30 years making use of this fact.

X took a loan of Rs5000 on simple interest, the rate of interest being the same as the number of years for which the loan was taken. If the interest paid was Rs1800, then what was the rate of interest? X ने साधारण ब्याज पर 5000 रुपये का ऋण लिया, जिसमें ब्याज की दर लिए गए ऋण के वर्षों की संख्या के समान थी | यदि 1800 रुपये के ब्याज का भुगतान किया गया, तो ब्याज की दर ज्ञात करें |

A person invested Rs. 12,000 on simple interest for 7 years to obtain a total amount of Rs. 20,400 on a certain annual rate of interest. What was the rate of interest to obtain the above amount? एक व्यक्ति ने 7 वर्षों के लिए साधारण ब्याज की एक निश्चित दर पर 12,000 रुपये निवेश किये तथा उसे 20,400 रुपये का मिश्रधन प्राप्त हुआ। उपरोक्त मिश्रधन प्राप्त करने के लिए ब्याज की दर कितनी थी?

The gravitational attraction between electron and proton in a hydrogen atom is weaker than the coulomb attraction by a factor of about 10^(-40) . An alternative way of looking at this fact is to estimate the radius of the first Bohr orbit of a hydrogen atom if the electron and proton were bound by gravitational attraction. You will find the answer interesting.