19% of 421+? =150

(-5)(4)(2)(-1/2)(3/4)= ?

Given the quadratic equation x2- (A - 3) x - (A - 2), for what value of A will the sum of the squares of the roots be zero?

16.02 x 0.001 =?

How much of 200 Rs / kg type tea should be mixed with 12 kg of 100 Rs / kg type tea to make 160 Rs / kg of branded tea ?

(16)²- 5³ + √169 = (?)²

(6)² + (8)² + (2)² - (9)²=?

5434+5782=? * 25 

4561 + 3254 =5422 +?

0.01 X 0.1 - 0.001 ÷10 + 0.01 = ?