Question
In a container, there are (x + 4) red balls, ‘x’
blue balls, and (x + 5) black balls. If the probability of picking two blue balls at random is (1/30), then find the value of ‘x’.Solution
According to the question, Total number of balls in the container = (x + 4 + x + x + 5) = (3x + 9) According to the question, 
Since the number of balls cannot be negative, Therefore, x = 6
8(3/4) + 5(1/6) – 4(3/4) = ?
What should come in place of (?) question mark in the given expression.
(2⁵ × 3⁴) ÷ (6³) = ?
1280 ÷ 8 + 490 ÷ √49 + ? = 150 * 2
What will come in place of (?) in the given expression.
{(60% of 250) + √144} ÷ (3² - 4) = ??% of 740 – 8% of 650 = 7.2
9 × 4 ? ÷ 16 = 144
82.3 × 644.7 × 723.4 × 815.85 = 72?
Simplify the given expression:
[(2.3)3 + (15.9) ³ + (3.7) ³ – 3 × 2.3 × 15.9 x 3.7)] / [(2.3) ² + (15.9) ² + (3.7) ² – 2.3 ...
447.8 × 441.2 ÷ 445 = 44 × 44?
What should come in place of (?) question mark in the given expression.
[ (48 ÷ 6) + (81 ÷ 9) ]² ÷ 17 = ?
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