Discussion
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- Question
- Which number should replace both the asterisks in (* /21) x (*/189) = 1?
Options- A. 21
- B. 63
- C. 3969
- D. 147
- Correct Answer
- 63
ExplanationLet (y/21) x (y/189) = 1
Then , y2 = 21 x 189 = 21 x 21 x 9
? y = (21 x 3) = 63 . - 1. 80 /? =? / 20
Options- A. 40
- B. 400
- C. 800
- D. 1600 Discuss
- 2. Five dozen toys are packed in a box and 98 boxes are kept in a tempo. How many tempos can lift 29400 toys in one round?
Options- A. 4
- B. 5
- C. 7
- D. 6 Discuss
- 3. Cost of 1 chair is Rs. 214 and cost of one table is Rs. 937, then what is the approximate cost of 6 dozen chairs and 4 dozen table?
Options- A. Rs. 60000
- B. Rs. 58000
- C. Rs. 55000
- D. Rs. 62000 Discuss
- 4. If the weight of 13 meters long rod is 23.4 kg. What is the weight of 6 meters long rod?
Options- A. 7.2 kg.
- B. 10.8 kg.
- C. 12.4 kg.
- D. 18.0 kg Discuss
- 5. When a 192 meters long rod is cut down into small pieces of length 3.2 meters each. Then how many pieces are available?
Options- A. 52
- B. 68
- C. 62
- D. None of these Discuss
- 6. What least number must be subtracted from 13601 to get a number exactly divisible by 87?
Options- A. 49
- B. 23
- C. 29
- D. 31 Discuss
- 7. 392/? ? = 28
Options- A. 144
- B. 196
- C. 24
- D. 48 Discuss
- 8. The sum of first four prime numbers is?
Options- A. 10
- B. 11
- C. 16
- D. 17 Discuss
- 9. The first prime number is?
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
- 10. 10 / 11 =110 /?
Options- A. 111
- B. 1100
- C. 121
- D. 100 Discuss
Number System problems
Search Results
Correct Answer: 40
Explanation:
Let 80/y = y/20
Then, y 2 = 80 x 20 = 1600
? y = ?1600 = 40.
Correct Answer: 5
Explanation:
? Five dozen = 5 x 12 = 60
? No of toys can be kept in 1 box = 60
? No of toys can be kept in 98 boxes = 60 x 98 = 5880
? 29400 toys can be lifted by = 29400 / 5880 = 5 tempos
Correct Answer: Rs. 60000
Explanation:
? Cost of 6 dozen chairs = 6 x 12 x214 = Rs. 15408
And cost of 4 dozen tables = 4 x 12 x 937 = Rs. 44976
? Total cost =15408 + 44976
= Rs. 60384
= Rs. 60000 (Approximately)
Correct Answer: 10.8 kg.
Explanation:
?Weight of 13 m long rod = 23.4 kg
? Weight of 1 m long rod = 23.4 / 13 kg
? Weight of 6 m long rod = 23.4 x 6 / 13
= 10.8 kg
Correct Answer: None of these
Explanation:
No. of pieces = Total length / Length of each piece
= 192/3.2
= 60
Correct Answer: 29
Explanation:
On dividing 13601 by 86, we get 29 as remainder
? Required number to be subtracted = 29.
Correct Answer: 196
Explanation:
Let 392/?x = 28
Then ?x = 392/28 =14
? x = 142 = 196
Correct Answer: 17
Explanation:
First four prime numbers are 2,3,5,7,
Their sum = (2 + 3 + 5 + 7) = 17.
Correct Answer: 2
Explanation:
The first prime number is 2.
Correct Answer: 121
Explanation:
Let 10/11 = 110/N,
Then, 10N = 11 x 110
? N = (11 x 110) /10 = 121.
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