NDA Mock Tests

Question: If A = xy z yz x zx y where x, y and z are integers is an orthogonal

Question: What is the number of selections of at most 3 things from 6 different things? What is the number

Question: If the number of selections of r as well as (n + r) things from 5n different things are

Question: If A = 122 212 221 then what is A2 – 4A equal to? If A = 122 212

Question: If f(q) = coss in sinc os then what is ( f(p))2 equal to? If f(q) = coss in

Question: Consider the following in respect of a non- singular matrix M: I. |M2| = |M|2 II. |M| = |M-1|

Question: If A = yz x zx y xy z Where x, y and z are integers, is an orthogonal

Question: If []x x 11 12 3 45 6 78 9 1 1 = [45] then which one of the

Question: If k < () 21 23k , where k is a natural number, then what is the value of

Question: If the sum of binomial coefficients in the expansion of ( x + y) n is 256, then the