If a + b + c = 12, a² + b² + c² = 52, then what is ab + bc + ca equal to-

23+ 3+33+333+3.33=?

What is the value of X ?, if 7580 - X = 3440

In a garden of 42 trees, 3/7 of them are Neem trees and the rest are Mango trees. Find the number of Mango trees.

If 551 ÷ 29 = 19 then 5.51 ÷ 0.0019 = ?

Solve: 12–[26–{2+5×(6–3)}]

Simplify : $$ {9\over 13} ÷{18\over 26}÷{90\over 52}$$

If $$ {y={2x-1\over x+3}}$$ find x when y=1