If a + 1/a = -2 then the value of a1000 +

What value should come in the place of (?) in the following questions?

70% of 240 + 75% of ? = 45 * 55 ÷ 5

(33 + 6.25% of 4096) = ? + 2 × 119

What will come in the place of question mark (?) in the given expression?

65% of 900 - 45% of 600 = ? X 3 

21^2.3 × 441^4.7 × 462^3.4 × 484^5.85 = 462^?

18/2 of 3/9 of 2/6 of 69690 = ?

Simplify the following questions and choose the correct option.

(84 × 3) ÷ 7 + (64 ÷ 8 × 5) − 19 = ?

7/11 × 1034 + 1(4/7) × 2401 = 1230 +?

(1520 - 1350) ÷ (550 – 500) = ?

What is the value of 7/9-11/12+12/16-1/8?

85% of 620 + ? % of 1082 = 4855