Exams Questions and Answers

Q:

How many 6-digit even numbers can be formed from the digits 1, 2, 3, 4, 5, 6 and 7 so that the digits should not repeat and the second last digit is even ?

A) 521	B) 720
C) 420	D) 225

Answer & Explanation Answer: B) 720

Explanation:

Let last digit is 2
when second last digit is 4 remaining 4 digits can be filled in 120 ways, similarly second last digit is 6 remained 4 digits can be filled in 120 ways.
so for last digit = 2, total numbers=240

Similarly for 4 and 6
When last digit = 4, total no. of ways =240
and last digit = 6, total no. of ways =240
so total of 720 even numbers are possible.

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Filed Under: Permutations and Combinations
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
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14 17588

Q:

Choose the related word/letters/number from the given alternatives.

GH : 78 : : ? : 1819

A) HG	B) LM
C) RS	D) IJ

Answer & Explanation Answer: C) RS

Explanation:

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Filed Under: Analogy
Exam Prep: Bank Exams

0 17581

Q:

In the following question,select the missing number from the given alternatives.

7, 26, ?, 124, 215, 342

A) 63	B) 65
C) 66	D) 67

Answer & Explanation Answer: A) 63

Explanation:

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 17578

Q:

If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is ?

A) 1	B) 1/2
C) 0	D) 3/5

Answer & Explanation Answer: B) 1/2

Explanation:

The number of exhaustive outcomes is 36.
Let E be the event of getting an even number on one die and an odd number on the other. Let the event of getting either both even or both odd then = 18/36 = 1/2
P(E) = 1 - 1/2 = 1/2.

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Filed Under: Probability
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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16 17577

Q:

The amount of water (in ml) that should be added to reduce 9 ml lotion, containing 50% alcohol, to a lotion containing 30% alcohol is ?

A) 6 ml	B) 11 ml
C) 15 ml	D) 9 ml

Answer & Explanation Answer: A) 6 ml

Explanation:

Let us assume that the lotion has 50% alcohol and 50% water.
ratio = 1:1
As the total solution is 9ml
alcohol = water = 4.5ml
Now if we want the quantity of alcohol = 30%
The quantity of water = 70%
The new ratio = 3:7
Let x ml of water be added
We get,
$\frac{4.5}{4.5 + x} = \frac{3}{7}$
=> x=6
Hence 6ml of water is added.

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Filed Under: Alligation or Mixture
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

29 17568

Q:

Consider the following statements:

1) The number of circles that can be drawn through three non-collinear points is infinity.

2) Angle formed in minor segment of a circle is acute.

Which of the above statements is/are correct?

A) 1 only	B) 2 only
C) Both 1 and 2	D) Neither 1 nor 2

Answer & Explanation Answer: D) Neither 1 nor 2

Explanation:

(1)

Only one circle can be drawn through 3 non collinear points

Angle in the minor segment is always obtuse

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

0 17565

Q:

In September 2017, who launched ‘Pradhan Mantri LPG Panchayat Yojna’?

A) Narendra Modi	B) Dharmendra Pradhan
C) Piyush Goyal	D) R.K. Singh

Answer & Explanation Answer: B) Dharmendra Pradhan

Explanation:

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Filed Under: General Awareness
Exam Prep: Bank Exams

0 17562

Q:

If the mathematical operators, 'x' means '+', '/' means 'x', '+' means '-', and '-' means '/', then 22 + 36 - 12 x 6 / 4 = ?

A) -21	B) 43
C) 68	D) 53

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