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- Question
There are deer and peacocks in a zoo. By counting heads they are 80. The number of their legs is 200. How many peacocks are there?
Options- A. 20
- B. 30
- C. 50
- D. 60
- Correct Answer
- 60
ExplanationLet x and y be the number of deer and peacocks in the zoo respectively. Then,x + y = 80 ...(i) and
4x + 2y = 200 or 2x + y = 100 ...(ii)
Solving (i) and (ii), we get) x = 20, y = 60.
More questions
- 1. Who sits between G and D?
Options- A. H
- B. D
- C. F
- D. E Discuss
Correct Answer: F
Explanation:
F
- 2. Find the odd one out:
Options- A. 49
- B. 36
- C. 65
- D. 100 Discuss
Correct Answer: 65
Explanation:
Except option (c) rest all are perfect squares.
- 3. NA
Options- A. Ring
- B. Tyre
- C. Plate
- D. Bangle Discuss
Correct Answer: Plate
Explanation:
Except, `Plate', all two in number.
- 4. NA
Options- A. Huge
- B. Tiny
- C. Heavy
- D. Small Discuss
Correct Answer: Heavy
Explanation:
All other terms are used to denote the size.
- 5. 15/20 ÷ 4/5 x 2/3 x 8/5 =?
Options- A. 0
- B. 1
- C. 3
- D. 5 Discuss
Correct Answer: 1
Explanation:
15/20 x 5/4 x 2/3 x 8/5 = 1
- 6. NA
Options- A. Raft
- B. Chariot
- C. Sledge
- D. Cart Discuss
Correct Answer: Raft
Explanation:
All Except `Raft' are down by animal.
- 7. NA
Options- A. 729
- B. 123
- C. 423
- D. 621 Discuss
Correct Answer: 729
Explanation:
Only '729' is a perfect cube.
- 8. NA
Options- A. 11
- B. 8
- C. 14
- D. 66 Discuss
Correct Answer: 11
Explanation:
This is the only prime number in the group.
- 9. NA
Options- A. Iron
- B. Mercury
- C. Silver
- D. Gold Discuss
Correct Answer: Mercury
Explanation:
All others are soild metals.
- 10. MO : 13 11 :: HJ :?
Options- A. 19 17
- B. 18 16
- C. 8 10
- D. 16 18 Discuss
Correct Answer: 18 16
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