Match the given string based on first two characters on each string.
b='harish'; result '1'
The two strings are not equal but match the starting two characters 'ha'.
as here we have to compare 1st two bits only, we are taking 1st two bits by a(1:2), means values of a starting from 1st position to 2nd position.
Return unique values without sorting
Is it a number?
Sum the numbers on the main diagonal
Dimensions of a rectangle
Given area find sides
Who invented zero?
give-nth-decimal-place-of-pi up to 100 digits
Basics: 'Find the eigenvalues of given matrix
CONVERT TAN TO SIN
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