81. A group of 1200 persons consisting of captains and soldiers is travelling in a train. For every 15 soldiers there is one captain. The number of captains in the group is ..
(a) 70
(b) 75
(c) 80
(d) 85
Answer:
Explanation:
82. The average age of three boys is 15 years and their ages are in proportion 3 : 5 : 7. What is the age in years of the youngest boy ?
(a) 15
(b) 9
(c) 18
(d) 21
Answer:
Explanation:
83. Statements: (i) All books are note books (ii) No notebook is pen
Inferences: (A) No book is pen (B) All pens are books
Options:
(a) Only inference (A) follows
(b) Only inference (B) follows
(c) Both inferences (A) and (B) follow
(d) Neither (A) nor (B) follows
Answer:
Explanation:
84. Statements: (i) All rings are earrings (ii) No earring is nosepin (iii) Some nosepins are baskets (iv) All baskets are vegetables
Inferences: (A) Some vegetables are earrings (B) Some nosepins are vegetables (C) No ring is nosepin
Options:
(a) only inferences (A) and (B) follow
(b) only inferences (A) and (C) follow
(c) only inferences (B) and (C) follow
(d) all inferences (A), (B) and (C) follow
Answer:
Explanation:
85. Which number can replace the question mark (?) in the box shown below?
| 4 | 5 | 3 | 2 | 0 |
| 7 | 3 | 4 | 4 | 21 |
| 6 | 4 | 4 | 5 | 22 |
| 9 | 6 | 5 | 5 | ? |
(a) 34
(b) 42
(c) 44
(d) 45
Answer:
Explanation: