Brass gets discolored in the air due to the presence of hydrogen sulphide. It is due to the presence of the mixture of hydrogen and sulphide that makes Brass discolored.
412 - 352 + ? = 113 - 192
Simplify the following questions:
(11) 8.5 × (121) 5.5 ÷ (1331) 5.5 = (11) ?
...72 x 60 x 22 x 32 =?
525 ÷ 21 x 28 – 853 + 264 = ?
240 × 2.5 + 65 × 2/13 = ?2 - √225
22% of 560 + 34% of 2160 × 5/12 =? + 16% of 920
118 × 6 + 13 + 83 = ?
√ (573 – 819 + 775) = ? ÷ 3
144% of 200 + 11% of 900 + 10% of 20 =?
I. 8x² - 74x + 165 = 0
II. 15y² - 38y + 24 = 0
