Exams Questions and Answers

Mr. Shankar spends 25% of his monthly salary on household expenditure, 20% of the remaining on children’s education, and the remaining is equally invested in three different schemes. If the amount invested in each scheme is Rs.5600, what is the monthly salary of Shankar ?

A) Rs. 34000	B) Rs. 31245
C) Rs. 24315	D) Rs. 28000

Answer & Explanation Answer: D) Rs. 28000

Explanation:

Let the monthly salary of Shankar be = Rs.x
Amount invested on expenditure = 25% = x/4;
Remaning amount = 3x/4;
Amount invested on children education = 20% i.e = 3x/20;
Remaining amount = 3x/4 - 3x/20 = 3x/5;
Remaining amount invested in three different schemes i.e is 1/3(3x/5)
=> x/5 = 5600
Therefore x = 28000
Hence, Monthly salary of Shankar is Rs. 28,000.

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6 4468

Solve the given math puzzle?

math_puzzle21543466621.jpg image

A) 11	B) 3
C) 10	D) 1

Answer & Explanation Answer: C) 10

Explanation:

From the given data,

1 + 9 + 8 = 1

ONE + NINE + EIGHT

Consider the first letters and join them viz O N E = 1

So, now consider 2 + 8 + 9 in similar way

TWO+EIGHT+NINE

First letters are T E N = 10

2 + 8 + 9 = 1⃣0⃣

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11 4466

Q:

A person purchase 50 mangoes he sells 10 at 20% profit, 20 at 30% profit and rest got rotten. Find its total loss or profit%?

A) 28% B) 26%

C) 24% D) 22%

A) 28%

B) 26%

C) 24%

D) 22%

Answer & Explanation Answer: C) 24%

Explanation:

Let the cost price of each mango be Rs. 1

So 50 mangoes costs = Rs. 50

20% Profit on Selling Price of 10 mangoes = Rs. 12

30% Profit on Selling Price of 20 mangoes = Rs. 26

Total = Rs. 38

Loss = 50 - 38 = 12

Loss% = (12/50) x 100 = 24%.

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Filed Under: Percentage
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5 4465

Q:

The number of sequences in which 4 players can sing a song, so that the youngest player may not be the last is ?

A) 2580 B) 3687

C) 4320 D) 5460

A) 2580

B) 3687

C) 4320

D) 5460

Answer & Explanation Answer: C) 4320

Explanation:

Let 'Y' be the youngest player.

The last song can be sung by any of the remaining 3 players. The first 3 players can sing the song in (3!) ways.

The required number of ways = 3(3!) = 4320.

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Filed Under: Permutations and Combinations
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5 4465

Q:

How many words can be formed with or without meaning by using three letters out of k, l, m, n, o without repetition of alphabets.

A) 60 B) 120

C) 240 D) 30

A) 60

B) 120

C) 240

D) 30

Answer & Explanation Answer: A) 60

Explanation:

Given letters are k, l, m, n, o = 5

number of letters to be in the words = 3

Total number of words that can be formed from these 5 letters taken 3 at a time without repetation of letters = $5 P_{3} ways .$

$\Rightarrow 5 P_{3} = 5 x 4 x 3 = 60 words .$

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9 4463

Q:

The 'IFSC Code' is an alphanumeric code comprising 11 characters that facilitates Electronic Fund Transfer in the country. The alphabet 'F' in the abbreviation 'IFSC' stands for ?

A) Fund B) Fast

C) Financial D) First

A) Fund

B) Fast

C) Financial

D) First

Answer & Explanation Answer: C) Financial

Explanation:

IFSC stands for - Indian Financial System Code. This is a code uniquely identifies each bank branch participating in the two main Payment and settlement systems in India :

1. RTGS - The Real Time Gross Settlement (and)

2. NEFT - The National Electronic Fund Transfer (NEFT) systems.

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14 4461

Q:

The percentage of nitrogen in the air is about

A) 74% B) 76%

C) 78% D) 80%

A) 74%

B) 76%

C) 78%

D) 80%

Answer & Explanation Answer: C) 78%

Explanation:

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Filed Under: Chemistry
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15 4461

Q:

Air ___________________ are the substances which contaminate the air.

A) Reactants B) Irritants

C) Resistants D) Pollutants

A) Reactants

B) Irritants

C) Resistants

D) Pollutants

Answer & Explanation Answer: D) Pollutants

Explanation:

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