Question
The question below are based on the given Series-I. The
series-I satisfies a certain pattern, follow the same pattern in Series-II and answer the questions given below. I) 11 42, 1285, 1450, 1637, 1846 II) 101 1 ….1715. If 1715 is the nth term, what value should come in the place of (n-1)th term?Solution
Series – I, 1142 + (122 – 12) = 1285 1285 + (132 – 22) = 1450 1450 + (142 – 32) = 1637 1637 + (152 – 42) = 1846 Series –II, 1011 + (122 – 12) = 1154 1154 + (132 – 22) = 1319 1319 + (142 – 32) = 1 506 (n - 1)th term 1506 + (152 – 42) = 1715 1715 is nth term
The current average age of Raghav and Pooja is 34 years. After 6 years, the ratio of their ages will be 7:9. Find Pooja’s age 5 years ago.
The ratio of the present ages of P and Q is 8:7 respectively. If the age of P 10 years hence from now will be 100% more than the age of Q 4 years ago fr...
A girl’s age is 160% of what it was 5 years ago, but 80% of what it will be after 6 years. What is her present age?
- Twelve years ago, Pawan's age was twice that of Qureshi. Thirteen years from now, the ratio of their ages will be 9:7. What is their current average age?
Three years ago, the ratio of ages of P, Q, and R was 4:3:5. Present age of S is 40 years, who is 5 years older than R. Find the age of P five years fro...
The average age of A, B and C is 30 years, while the average age of B, A and D is 20 years. If the ratio of the age of C and D is 5:3, respectively, the...
 Present age of Vikrant is 40% less than the present age of Priya. Age of Vikrant 4 years ago was 50% the present age of Priya. Find the present averag...
A’s present age is double B’s present age. After 6 years, A’s age will be four times the present age of C. The ratio of B’s age 3 years ago to C...
The present age of A is 5/3 times to that of his marriage age. Present age of his brother is 1/3rd of his present age. If A was married 24 years ago the...
The respective ratio of the present ages of A and B is 7:6. The present age of C is 10% more than that of B. The sum of the present ages of A, B and C i...