ICSE − Q & A

What is the work of math.rint ,math.floor,math.ceil kindly explain in an easy language with an example please please😢😢

will you guys do section a or b first?

Write a program to convert a string to title case.(first letter of each word of a string to title case)

how do you declare a character data type variable ? i'm so confused about this

Guys i have an idea for relaxation

which is the default package?pls answer asap

guys can u help me with the difference between 
pure and impure function

Pls tell the concept of frequency programs na!!!
Like to frequency of a digit, letter, word........

USeful Information. MUST note:
Instance methods can access instance variables and instance methods directly.
Instance methods can access class variables and class methods directly.
Class methods can access class variables and class methods directly.
Class methods cannot access instance variables or instance methods directly—they must use an object reference. Also, class methods cannot use the this keyword as there is no instance for this to refer to.

Secondly, someone asked to repost the method to learn Operator P., here it is: 
Way to learn precedence of operator (I learnt this way before my prelim1 and easily succeeded in learning)
Mnemonic: PUMA - REBEL - CA
Expansion:
P - Paranthesis (), []
U - Unary ++,--, !
M - Multipicative *, /, %
A - Additive  +, - 
R - Relational >, >=, <, <=
E Equality == , !=
B - Bitwise And, Bitwise Or, Bitwise Not
E - Extra
L - Logical AND, Logical Or
C - Conditional assignment (ternary)
A - Assignment =, +=, -=,/=

(Eco App) What are some examples for the following taxes? 
(progressive, proportional, degressive, regressive)