81. If 1³ + 2³ + …….. + 9³ = 2025 then the value of (0.11)³ + (0.22)³ + ….. + (0.99)³ is close to:
(A) 0.2695
(B) 0.3695
(C) 2.695
(D) 3.695
Answer:
Explanation:
82. If 1.5x = 0.04y, then the value of [(y-x)/(y+x)] is :
(A) 730/77
(B) 73/77
(C) 7.3/77
(D) 732/77
Answer:
Explanation:
83. Village X has a population of 68000, which is decreasing at the rate of 1200 per year. Village Y has a population of 42000, which is increasing at the rate of 800 per year. In how many years will the population of the two villages be equal?
(A) 13 years
(B) 12 years
(C) 15 years
(D) 17 years
Answer:
Explanation:
84. Vidushi and Sanya distribute Rs. 100 each in charity. Vidushi distributes money to 5 more people than Sanya and Sanya give each Re. 1 more than Vidushi. How many people are recipients of the charity?
(A) 45
(B) 60
(C) 90
(D) 100
Answer:
Explanation:
85. The ages of two persons differ by 16 years. If 6 years ago, the elder one be 3 times as old as the younger one, find their present ages.
(A) 12 years and 24 years
(B) 10 years and 25 years
(C) 15 years and 32 years
(D) 14 years and 30 years
Answer:
Explanation: