Question Library
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What is the last digit in 7⁴⁰² + 3⁴⁰²?
CDS Elementary Mathematics 2013
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Mathematics
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Which is the smallest number among the following?
CDS Elementary Mathematics 2013
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Mathematics
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2 men and 1 woman can complete a piece of work in 14 days, while 4 women and 2 men…
CDS Elementary Mathematics 2013
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Mathematics
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How many 200 mm lengths can be cut from 10 m of ribbon?
CDS Elementary Mathematics 2013
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Mathematics
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Every prime number of the form 3k + 1 can be represented in the form 6m + 1 (k, m…
CDS Elementary Mathematics 2013
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Mathematics
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If k is a positive integer, then every square integer is of the form
CDS Elementary Mathematics 2013
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Mathematics
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If b is the largest square divisor of c and a² divides c, then which one of the following is…
CDS Elementary Mathematics 2013
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Mathematics
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For integers a, b and c, if HCF(a, b) = 1 and HCF(a, bc) = 1, then which one of…
CDS Elementary Mathematics 2013
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Mathematics
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Two lots of onions with equal quantity, one costing ₹10 per kg and the other costing ₹15 per kg, are…
CDS Elementary Mathematics 2013
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Mathematics
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X can do a work in 16 days. In how many days will the work be completed by Y if…
CDS Elementary Mathematics 2013
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Mathematics
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A person’s salary has increased from ₹7,200 to ₹8,100. What is the percentage increase in his salary?
CDS Elementary Mathematics 2013
CDS 2013
Mathematics
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If x/2 + y/3 = 4 and 2x/3 + 3/y = 1, then what is x + y equal to?
CDS Elementary Mathematics 2013
CDS Mathematics 2013
Mathematics
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x(y² − z²) + y(z² − x²) + z(x² − y²) is divisible by
CDS Elementary Mathematics 2013
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Mathematics
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For what values of k will 4x⁵ + 9x⁴ − 7x³ − 5x² − 4kx + 3k² contain x −…
CDS Elementary Mathematics 2013
CDS 2013
Mathematics
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If (49)² − (25)² = 37x, then what is x equal to?
CDS Elementary Mathematics 2013
CDS 2013
Mathematics
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Consider the following statements: 1. 7710312401 is divisible by 11. 2. 173 is a prime number.Which of the statements given…
CDS Elementary Mathematics 2013
CDS 2013
Mathematics
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The quantity which must be added to (1 − x)(1 + x + x²) to obtain x³ is
CDS Elementary Mathematics 2013
CDS 2013
Mathematics
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If x² = 6 + √6 + √6 + √6 + … then what is one of the values of…
CDS Elementary Mathematics 2013
CDS 2013