Discussion
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- Question
What is the time required to punch 1500 cards of 45 column each at the rate of 9,000 punches per hour ?
Options- A. 8 hrs
- B. 7 hrs 15 min
- C. 7 hrs 30 min
- D. 8 hrs 20 min
- Correct Answer
- 7 hrs 30 min
ExplanationTotal number of cards = 1500
total columns = 45
so, total punches=1500 x 45 = 67500
for 1 hour if we make 9000 punches,
we require 67500/9000 = 7.5
so 7hours:30mins. - 1. At what time will B catch up with A, if A starts from a place at 11.00 A.M. and travels at a speed of 3.5 kmph, B starts at 1.00 P.M. and travels with speeds of 1 kmph for 1 hour, 2 kmph for the next 1 hour, 3 kmph for the next 1 hour and so on.
Options- A. 8 : 47 pm
- B. 6 : 40 pm
- C. 8 : 42 pm
- D. 7 : 40 pm Discuss
- 2. The price of commodity X increases by 60 rupees every year, while the price of commodity Y increases by 20 rupees every year. If in 2002, the price of commodity X was Rs. 320 and that of Y was Rs. 740, in which year commodity X will cost 60 rupees more than the commodity Y ?
Options- A. 2011
- B. 2014
- C. 2012
- D. 2017 Discuss
- 3. 6 choose 3 =
Options- A. 20
- B. 30
- C. 18
- D. 24 Discuss
- 4. The complexity of linear search algorithm is
Options- A. O(n2)
- B. O(n log n)
- C. O(n)
- D. O(log n) Discuss
- 5. With similar triangles the corresponding angles are equal.
Options- A. TRUE
- B. FALSE Discuss
- 6. A kiddy bank of a child contains all Rs. 1, 50 paise and 25 paise coins. What is the total amount in the bank ? (1) Total number of coins are 20 (2) The number of 50 paise and 25 paise coins are in the ratio of 7:3.
Options- A. only 1 is needed
- B. only 1 is needed
- C. Both and 2 are needed
- D. None Discuss
- 7. Multiplicative inverse of 0
Options- A. 0
- B. 1
- C. infinity
- D. None of the above Discuss
- 8. How many right angles does a square have?
Options- A. 2
- B. 6
- C. 4
- D. 8 Discuss
- 9. What is the value of 28 tens?
Options- A. 28
- B. 2
- C. 2800
- D. 280 Discuss
- 10. 9 tens 10 ones equals
Options- A. 910
- B. 90
- C. 91
- D. 100 Discuss
Arithmetic Reasoning problems
Search Results
Correct Answer: 7 : 40 pm
Explanation:
At 1 pm ... Distance between A and B = 2x3.5 = 7 kms
at 2 pm .....Distance between A and B = 7 + 3.5 - 1 = 9.5 kms
At 3 pm ....Distance between A and B = 9.5 + 3.5 - 2 = 11 kms.
..
..
..
At 7 pm distance between A and B = 3 kms.
From 7 pm to 8 pm, speed of A = 3.5 kmph
speed of B = 8 kmph
Relative speed = 4.5 kmph
Time taken by B to meet A = 3/4.5 hrs = 30/45 hrs = 120/3 mins = 40 mins.
So meeting time is 7 : 40 PM.
Correct Answer: 2014
Explanation:
If After p years , commodity X will cost 60 rupees more than the commodity Y, then
320 + 60p = 740 + 20p + 60
=> p = 12
So in year (2002 + 12 = 2014), commodity X will cost Rs.60 more than the commodity Y.
Correct Answer: 20
Explanation:
6 choose 3 means number of possible unordered combinations when 3 items are selected from 6 available items i.e, nothing but 6C3.
Now 6C3 = 6 x 5 x 4/3 x 2 x 1 = 120/6 = 20.
Correct Answer: O(n)
Explanation:
The worst case complexity of linear search is O(n).
Correct Answer: TRUE
Explanation:
The given statement about similar triangles is TRUE.
Similar Triangles Theorem :: Similar triangles are two triangles with corresponding angles of equal measure, and the ratios of their corresponding sides' lengths are equal.
Correct Answer: Both and 2 are needed
Explanation:
Given that 50 paise and 25 paise coins are in the ratio of 7:3, they can be either 7 & 3 or 14 & 6.
As total 20 coins also includes Rs. 1 coins, so 50 paise & 25 paise coins are 7 & 3 respectively & Rs. 1 coins are 10.
Total amount = (100x10) + (50x7) + (25x3)=1425 paise or Rs.14.25.
Correct Answer: None of the above
Explanation:
In the real numbers, zero does not have a reciprocal because no real number multiplied by 0 produces 1 (the product of any number with zero is zero).
Hence, 0 doesn't have any multiplicative inverse.
Correct Answer: 4
Explanation:
A square and a rectangle each have 4 right (90 deg) angles.
Both square and rctangle have 4 sides and 4 angles, but the only difference is square is a rectangle with all sides equal.
Correct Answer: 280
Explanation:
Here asked for the value of 28 tens
=> 28 x 10 = 280.
Correct Answer: 100
Explanation:
9 tens 10 ones equals
=> 9 x 10 + 10 x 1
=> 90 + 10
=> 100.
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