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The difference between compound interest and simple interest on a sum for 2 year at 20% per annum is Rs 200. If the interest is compounded halfyearly, then what is the difference (in Rs) between compound and simple interest for 1st year?

x-1/x=3
find
x^4-1/x^4.

HOW MANY 4 DIGIT NO.CAN BE MADE WITH THE DIGITS 1,2,3,4,5,6,7 DIVISIBLE BY 25 ONLY ONCE?

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ABCD is a rectangle with AD being longer side.P and Q be the mid-points of AB and CD.x is a point on AD.Then what is the ratio of Area of PQCB to XCB?
a)DQ=PB
b)AP=CQ

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An aircraft carries 521 people safely from Kedarnath to Dehradun in 12 hours.How many rounds it take.
1.It can carry a maximum of 54 people at a time.
2.I 45 minute to fly from one city to other and 15 minute while waiting.

Option:
A.If one alone can give the answer but other can not give answer.
B.If both together can give the answer.
C.If either of two can give the answer
D.Neither of two can give the answer

please tell the solution..

[x] greater than equal to (>=) x. What is the value of 
[1/3] + ([1/3] +[1/50]) + ([1/3] + [2/50])+ ([1/3] + [3/50]) +………..([1/3] + [70/50])

4 - A shopkeeper allows 25% discount on the marked price of an article and he suffered a loss of 15%. What will be the profit percent if the article is sold at marked price?

A shopkeeper allows 25% discount on the marked price of an article and he suffered a loss of 15%. What will be the profit percent if the article is sold at marked price?

i want chsl tier 2 preparation material

Passive form of - Somebody told me that there had been a robbery in the jewellery exhibition.