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CDS | Elementary Mathematics | Revision

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Question 1

A sum of money invested at compound interest amounts to Rs. 900 in 3 years and to Rs. 990 in 4 years. The rate of interest per annum is –

Question 2

are arranged in decreasing order then which will come 3rd ?

Question 3

Consider the following statements in respect of three 3-digit numbers XYZ, YZX and ZXY:
1) The sum of the numbers is not divisible by
2) The sum of the numbers is divisible by 111.
Which of the above statements is/are correct?

Question 4

The HCF of two natural numbers m and n is 24 and their product is 552. How many sets of values of m and n are possible?

Question 5

The HCF of two number is 98 and their LCM is 2352. The sum of the numbers may be
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Mar 31CDS & Defence