Aptitude and Reasoning Questions

Q:

36 is what percent of 80?

A) 54 B) 45
C) 60 D) 64
 
Answer & Explanation Answer: B) 45

Explanation:

Let 36 is p% of 80

=> p x 80/100 = 36

=> p = 36 x 10/8 = 45.

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Q:

In a class of 80 students and 5 teachers, each student got shopping coupons that are 15% of the total number of students and each teacher got shopping coupons, that are 25% of the total number of students. How many shopping coupons were there?

A) 960 B) 1000
C) 1060 D) 100
 
Answer & Explanation Answer: C) 1060

Explanation:

Given total number of students = 80

Total teachers = 5

Number of coupons each student got = 15 x 80/100 = 12

Number of coupons each teacher got = 25 x 80/100 = 20

 

Therefore, total number of shopping coupons = 80 x 12 + 5 x 20 = 960 + 100 = 1060.

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Q:

A watch loses 5 minutes every hour and was set right at 6 a.m. on a Monday. When will it show the correct time again?

A) 6 a.m. on next Sunday B) 3 a.m. on next Monday
C) 3 a.m. on next Sunday D) 6 a.m. on next Monday
 
Answer & Explanation Answer: A) 6 a.m. on next Sunday

Explanation:
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Q:

0 divided by 0

A) 0 B) 1
C) Undefined D) Indeterminate
 
Answer & Explanation Answer: D) Indeterminate

Explanation:

Indeterminate are those,which mathematics can’t determine.

Because we don’t actually know which one is the exact answer for this due to having lots of results for this.

Explanation::

      • Let us think by this analogy that,

0 / 1 = 0

0 / 2 = 0

…………

………..

we can say 0 / n = 0 from this we can write, 0/0 = 0

      • Again, another analogy,(from limiting concept of 1/0 = infinity)

1 / 0 = + or -

2 /0 = + or -

………

.…….

we can say 0 / 0 = 

      • Again, another analogy,

1 / 1 = 1

2/2 = 1

.……..

………..

we can say, 0/0 = 1

Now, you see it’s confusing. Every analog is mathematically correct then which one is the right answer for 0/0.  Therefore Mathematics can’t determine this fact.

So, 0/0 is indeterminate.

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Q:

Two number P & Q are 20 % and 28 % less then a number X. What is the percentage the number Q is smaller then the number P?

A) 10% B) 23%
C) 12% D) 13%
 
Answer & Explanation Answer: A) 10%

Explanation:

Let the number X is 100

Then, PÃ 80 QÃ 72

So, Percentage decrease from P to Q is à 8/80=0.1-100=10%

1 is the right choice.

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Q:

A tangent contains at most how many chords?

A) 1 B) 2
C) 3 D) 0
 
Answer & Explanation Answer: D) 0

Explanation:

A tangent contains ZERO chords, as it touches the circle at only one point.

 

Hence, it does not contain any chord.

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Q:

In a certain code language, "SELDOM" is written as "NPEMFT". Howis "SACRIFICE" written in that code language?

A) FDJGJDSBT B) FDJGJSDBT
C) FDJSJGTBD D) FGDJGDSBT
 
Answer & Explanation Answer: B) FDJGJSDBT

Explanation:
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Q:

The average weight of L, M and N is 93 kg. If the average weight of L and M be 89 kg and that of M and N be 96.5 kg, then the weight (in kg) of M is ________.

A) 92 B) 86
C) 101 D) 95
 
Answer & Explanation Answer: A) 92

Explanation:
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