Question
Find the no. of words formed by using all the letter of
the word DISCOUNT, so that the vowels are never together?Solution
Total number of words formed by using all the letters of the given word = 8! = 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 40320 Number of words formed when vowels are together = DISCOUNT = 3! × 6! = 6 x 720 = 4320 Number of words formed when vowels are never together = 40320 – 4320 = 36000
More Permutation and combination Questions
583.9 + 1519.98 - 445.21 = 1150.011 + ?
32.052- 22.03 x 24.199 - 15.18 x 11.04 = ?
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
(9/20 of 3998.93) - √2499.57 + (17.87% of 1199.67) = ?
(32.18% of 2399.89 - √624 × 26.25) % of 149.79 = ?
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
What will be the approximate value of the following questions.
(74.75% of 600.29 – 44.85% of 399.99) × (√224.95 ÷ 15.01) = ?
³√? `xx` 32.87 + 59.83 `xx` 28.7665 – 48.8745 `xx` 21.642 = 1085.344
(3/7 of 1049.88 + 44.95% of 799.79) ÷ (√168.89 + 24.77% of 400.11) = ?
