The given algebraic expression is written in prefix notation. ∕ − ↑ −? × 7 ? 3 4 × 3 b a) Write the expression in postfix notation. b. Write the expression in infix notation.

The identifier std::cout is a C++ keyword.A. True B. False

Write the C++ code to do the following: Ask the user for a number, N, between 1 and 10 Show the user a list of operations to perform: 2*N N^2 (N2) 2^N (2N) Ask the user to choose an operation 1-3 Show the result of the calculation Validate the number they enter. If it's not between 1 and 10 (inclusive), print a message and exit the program Validate their operation choice. If it's not one of the choices, print an error message and exit the program. You must use the switch operator  #include <iostream> #include <math.h> using namespace std; int main() { // your code here return 0; }

A pair of primes that vary by two is a pair of twin primes (e.g., 3 and 5, 101 and 103). Write a C++ application that displays the total number of twin primes smaller than 1000.