PayPal placement questions

If x² - 9x + 20 = 0, what are the values of x?

A shopkeeper buys an item for ₹400 and sells it at a 25% profit. What is the selling price?

If MOBILE is coded as ZLORNY, how is LAPTOP coded?

Six people – P, Q, R, S, T, and U – are sitting in a row. P is second to the left of T. Q is at one end. U is sitting between P and S. Who is sitting in the middle?

Identify the grammatically correct sentence.

Find the output of the following C program: #include int main() { int a = 5, b = 10; printf("%d", a++ + ++b); return 0; }