Question
A box contains 6 blue shirts, 7 yellow shirts and 9 pink
shirts. In how many ways can 4 shirts be drawn from the box, if at least one blue shirt, one yellow shirt and one pink shirt is to be included in a draw?Solution
Required number of ways = (6_(C_2 )×7_(C_1 )×9_(C_1 )) OR(〖 6〗_(C_1 )×7_(C_2 )×9_(C_1 )) OR 〖(6〗_(C_1 )×7_(C_1 )×9_(C_2 )) = (15 ×7 ×9)+(6 ×21 ×9)+(6×7 ×36) = 945 + 1134 + 1512 = 3591
More Calculation based Questions
Solve the following:
523 + 523 x 523 ÷ 523
(320 + 342 + 530 + 915) ÷ (20 + 22 – x + 18) = 43, then the value of x is:
24% of 15% of 500 + 122 = ?2 – (232 ÷ 2)
68% of 450 – 1008 ÷ 14 + 516 ÷ 43 =?
Simplify the following expression:
{640 of 8 - (12)2 of 6} - 900 = ?
Find the HCF of 15x2 + 8x – 12, 3x² + x – 2, 3x² - 2x, 9x² - 12x + 4
(6630 ÷ 13 + 6120 ÷ 12) ÷ (17 × 3) = ?Â
- Calculate the value of x if x% of 400 plus {800 ÷ x of 8} × 4 is equal to 88
Find the value of 'p' in the given expression: 15 of 6 ÷ p x 4 = 30.
Relevant for Exams:
