Total number of pens = 6 + 4 + 2 + 4 = 16 Let S be the sample space. Then, n(S) = number of ways of drawing 4 pens out of 16 = ¹⁶C4= (16 × 15× 14 × 13 )/( 4 × 3 × 2 × 1) = 1820 Let E= event of drawing 4 pens so that one is green, two are blue and one is red = n(E) = ²C1×⁴C2×⁶C1= 2 × 6 × 6= 72 ∴ P (E) = (n(E))/(n(S))= 72/1820 = 18/455
25.22% of (59.9 × 4.01) + 69.97 =?
(11.11 × 31.98) + 14.15% of 749.99 = ? + 124.34
√1024.21 × √624.89 ÷ 4.98 + 11.99 × 4.01 = ?
14.232 + 24.98% of 679.99 = ? × 5.99
Solve the following expression and calculate the approximate value.
398% of 388 + 129% of 323.89 – 430.93
12.03 x 4.21 +19.95% of 300.05 = ?
P spends 20% of his monthly income in travelling. He spends 25% of his monthly income on household expenses and spends 15% of his monthly income on fami...
? 3 + 95.06 X 39.87 ÷ 5.03 = 1271.89
16.11 × 9.96 – (238.19 – 64.04 × 2.18) = ?
