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As the person is always included, therefore, ∴ C_1 × 10C_4 = 1 × (10 × 9 × 8 × 7)/(4 × 3 × 2) = 210
Present age of ‘A’ is 40% more than that of ‘B’. If 25 years hence from now, ‘B’ will be 15 years younger than ‘A’, then find the sum of...
The ratio of age of ‘B’ after 6 years from now and age of ‘C’ 4 years ago from now is 7:4, respectively. The present age of ‘C’ is 40% of th...
The sum of present ages of ‘Rahul’ and ‘Sneha’ is 48 years. The present age of ‘Sneha’ is half the age of ‘Tanya’ 4 years hence. If the ...
Three years ago, the age difference between Tina and Mina was 4 years. Currently, the ratio of their ages is 5:7, respectively. Determine the present ag...
The average of the present ages of A, B, C and D is (y-3) years. 12 years hence, the ratio between the ages of A and C is 9:8 respectively. Th...
Present age of ‘A’ is 50% more than that of ‘B’. If 12 years hence from now, ‘B’ will be 7 years younger than ‘A’, then find the sum of ...
Sum of the present ages of A, B, C and D is 50 years. After 5 years ratio of their ages is 5:4:3:2. What is C’s present age?
Eight years ago, the ratio of the ages of Ram and Shyam was 5:6, respectively. Seven years hence, the ratio of the ages of Prem and Shyam will be 3:4, r...
