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NDA PREVIOUS YEARS-QUESTION PAPER 2021(I)-MULTIPLE CHOICE QUESTION
- The quadratic equation 3x^2 - (k^2 + 5k) x + 3k^2 - 5k = 0 has real...
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- If a(n) = n(n!) , then what is a1 +a2 +a3 +......+ a(10) equal to ?
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- If p and q are the non-zero roots of the equation x^2 + px + q = 0, t...
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- If Delta=|(a,b,c),(d,e,f),(g,h,i)| then what is |(3d+5g ,4a+7g,6g...
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- If (1)/(b+c),1/(c+a),1/(a+b) are are in HP, then which of the followin...
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- If A=[(1,a),(0,1)] where a in N , then what is A^(100) - A^(50)-2A^(2...
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- If |(a,-b,a-b-c),(-a,b,-a+b-c),(-a,-b,-a-b+c)| - kabc = 0 (a != 0, b !...
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- What is sum(r = 1)^(8n + 7)i^(r) equal to where i = sqrt(-1) ?
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- If z = x + iy where i = sqrt(-1) , then what does the equation zbarz ...
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- Which one of the following is a square root of 2a+2sqrt(a^2+b^2) , w...
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- If sintheta and costheta are the roots of the equationax^(2)-bx+c=0 ,...
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- If C (n, 4), C (n, 5) and C (n, 6) are in AP, then what is the value ...
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- How many 4-letter words (with or without meaning) containing two vowe...
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- Suppose 20 distinct points are placed randomly on a circle. Which of t...
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- How many terms are there in the expansion of ((a^2)/(b^2) + (b^2)/(a^2...
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- For what values of k is the system of equations 2k^2x + 3y - 1 = 0, ...
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- The inverse of a matrix A is given by [(-2,1),(3/2, -1/2)] What is A e...
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- What is the period of the function f(x) = ln (2 + sin^2 x)?
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- If sin(A + B) = 1 and 2 sin (A - B) = 1, where 0 lt A, B lt pi/2 then ...
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- Consider a regular polygon with 10 sides, What is the number of triang...
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