Miscellaneous On Data Structures - Study Mode

[#621] How many cases are there under Master's theorem?
Correct Answer

(B) 3

[#622] What is the formula to calculate the element present in second row, first column of the product matrix?
Correct Answer

(D) M2 + M4

[#623] Which of the following is hardest to break using frequency analysis?
Correct Answer

(C) Playfair cipher

[#624] Why do we require hamming codes?
Correct Answer

(A) Error correction

[#625] Which of the following methods used to find the sum of first n natural numbers has the least time complexity?
Correct Answer

(C) Binomial coefficient