Arithmetic Reasoning - 01

01. A placed three sheets with two carbons to get two extra copies of the original. Then he decided to get more carbon copies and folded the paper in such a way that the upper half of the sheets were on top of the lower half. Then he typed. How many carbon copies did he get?

  • 11
  • 22
  • 33
  • 44
Answer:- 1
Explanation:-

Solution:
Since the number of carbons is 2, only two copies can be obtained.

02. Between two book-ends in your study are displayed your five favourite puzzle books. If you decide to arrange the five books in every possible combination and moved just one book every minute, how long would it take you ?

  • 11 hour
  • 22 hours
  • 33 hours
  • 44 hours
Answer:- 1
Explanation:-

Solution:
Clearly, number of ways of arranging 5 books = 5 ! = 5 x 4 x 3 x 2 x 1 = 120.
So, total time taken = 120 minutes = 2 hours.

03. On Children's Day, sweets were to be equally distributed among 175 children in a school. Actually on the Children's Day, 35 children were absent and therefore each child got 4 sweets extra. Total how many sweets were available for distribution ?

  • 12400
  • 22480
  • 32680
  • 42800
Answer:- 1
Explanation:-

Solution:

Arithmetic Reasoning mcq solution image

04. Nitin's age was equal to square of some number last year and the following year it would be cube of a number. If again Nitin's age has to be equal to the cube of some number, then for how long he will have to wait?

  • 110 years
  • 238 years
  • 339 years
  • 464 years
Answer:- 1
Explanation:-

Solution:
Clearly, we have to first find two numbers whose difference is 2 and of which the smaller one is a perfect square and the bigger one a perfect cube.
Such numbers are 25 and 27.
Thus, Nitin is now 26 years old. Since the next perfect cube after 27 is 64,
so required time period = (64 - 26) years = 38 years.

05. A number consists of two digits whose sum is 11. If 27 is added to the number, then the digits change their places. What is the number ?

  • 147
  • 265
  • 383
  • 492
Answer:- 1
Explanation:-

Solution:
Let the ten's digit be x. Then, unit's digit = (11 - x).
So, number = 10x + (11 - x) = 9x + 11.
Therefore (9x + 11) + 27 = 10 (11 - x) + x ⇔ 9x + 38 = 110 - 9x ⇔ 18x = 72 ⇔ x = 4.
Thus, ten's digit = 4 and unit's digit = 7.
Hence, required number = 47.

06. A monkey climbs 30 feet at the beginning of each hour and rests for a while when he slips back 20 feet before he again starts climbing in the beginning of the next hour. If he begins his ascent at 8.00 a.m., at what time will he first touch a flag at 120 feet from the ground?

  • 14 p.m.
  • 25 p.m.
  • 36 p.m.
  • 4None of these
Answer:- 1
Explanation:-

Solution:
Net ascent of the monkey in 1 hour = (30 - 20) feet = 10 feet.
So, the monkey ascends 90 feet in 9 hours i.e. till 5 p.m.
Clearly, in the next 1 hour i.e. till 6 p.m. the monkey ascends remaining 30 feet to touch the flag.

07. In a caravan, in addition to 50 hens, there are 45 goats and 8 camels with some keepers. If the total number of feet be 224 more than the number of heads in the caravan, the number of keepers is

  • 15
  • 28
  • 310
  • 415
Answer:- 1
Explanation:-

Solution:
Let number of keepers be x. Then,
Total number of feet = 2 x 50 + 4 x 45 + 4 x 8 + 2x = 2x + 312.
Total number of heads = 50 + 45 + 8 + x= 103 + x.
Therefore (2x + 312) = (103 + x) + 224 or x = 15.

08. 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

  • 185
  • 280
  • 375
  • 470
Answer:- 1
Explanation:-

Solution:
Clearly, out of every 16 persons, there is one captain. So, number of captains (1200/16) = 75.

09. At the end of a business conference the ten people present all shake hands with each other once. How many handshakes will there be altogether ?

  • 120
  • 245
  • 355
  • 490
Answer:- 1
Explanation:-

Solution:
Clearly, total number of handshakes = (9+ 8 + 7 + 6 + 5 + 4 + 3 + 2+1) = 45.

10. If readymade shirts need alterations 2 out of 3 in sleeves, 3 out of 4 in collar and 4 out of 5 in the body, how many alterations will be required for 60 shirts ?

  • 188
  • 2123
  • 3133
  • 4143
Answer:- 1
Explanation:-

Solution:

Arithmetic Reasoning mcq solution image

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