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- Question
The number of boys in a class is three times the number of girls. Which one of the following numbers cannot represent the total number of children in the class?
Options- A. 48
- B. 44
- C. 42
- D. 40
- Correct Answer
- 42
ExplanationLet number of girls = x and number of boys = 3x.Then, 3x + x = 4x = total number of students.
Thus, to find exact value of x, the total number of students must be divisible by 4.
More questions
- 1. A prime number between 10 and 50 remains unchanged if its digits are reversed. Then the square of such a number is:
Options- A. 121
- B. 484
- C. 1089
- D. 1936 Discuss
Correct Answer: 121
- 2. In a row of boys, Punit?s position from the left end is 33rd and Ankit?s position from the right end is 25th. After interchanging their position, Punit?s positionbecomes 45th from the left end. How many boys are there in the row?
Options- A. 70
- B. 71
- C. 69
- D. 74 Discuss
Correct Answer: 69
- 3. Seven boys A,B,C,D,E,F and G are standing in a line. (i) G is between A and E (ii) F and A have one boy between them (iii) E and C have two boys between them (iv) D is immediate right of F (v) C and B have three boys between them Who is second from left?
Options- A. C
- B. G
- C. E
- D. A Discuss
Correct Answer: E
- 4. In a group of 50 students, 25 play Hockey, 30 play Football, and 8 play neither game. What is the number of students who play both Hockey and Football?
Options- A. 10
- B. 11
- C. 12
- D. 13 Discuss
Correct Answer: 13
- 5. Of the six members of a panel sitting in a row, A is to the right of C, but left of B. E is sitting left of C and right of D, who is sitting to the right of F. Find the members sitting at the two ends of the row.
Options- A. D.F
- B. A.B
- C. D.B
- D. F.B Discuss
Correct Answer: F.B
- 6. A man is engaged for planting trees for 10 hours. He plants 10 trees in an hour. He takes rest for 30 minutes after every hour. How many trees does he plant in 10 hours?
Options- A. 100
- B. 50
- C. 70
- D. 45 Discuss
Correct Answer: 70
- 7. The weights of 4 boxes are 40, 70, 80 and 50 kilograms.Which of the following cannot be the total weight,in kilograms, of any combination of these boxes and in a combination a box can be used only once?
Options- A. 240
- B. 160
- C. 200
- D. 220 Discuss
Correct Answer: 220
- 8. A series is given, with one word missing. Choose the correct alternative from the given ones that will complete the series. Pension, Aptitude, Captain, Tropical, Survive, ?
Options- A. Parrot
- B. Apply
- C. Trap
- D. Tetrapod Discuss
Correct Answer: Tetrapod
- 9. The weights of 4 boxes are 80, 60, 90 and 70 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes?
Options- A. 300
- B. 230
- C. 220
- D. 290 Discuss
Correct Answer: 290
- 10. The weights of 4 boxes are 70, 50, 30 and 90 kilograms. Which of the following cannot be the total weight,in kilograms, of any combination of these boxes and in a combination a box can be used only once?
Options- A. 220
- B. 240
- C. 210
- D. 170 Discuss
Correct Answer: 220
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