Free Practice Questions for Competitive Exams, Interviews, Certifications

Q:

O and O' are the center of the two circles with radii 7cm and 9cm respectively. The distance between the centers is 20cm. If PQ be the transverse common tangent to the circles, which cuts OO' at X, what is the length of O'X in cm ?

A) 10	B) 6
C) 35/4	D) 45/4

Answer & Explanation Answer: D) 45/4

Explanation:

As clear from the figure itself, triangle OQX and triangle O'PX are similar.

So,

OQ/O'P = OX/O'X

=> OX = (7/9)xO'X

And since, OX + O'X = 20

=> (7/9)xO'X + O'X = 20

=> O'X = 45/4

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Filed Under: Arithmetical Reasoning
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Q:

What is the capital of the country Turkmenistan ?

A) Dushanbe	B) Ashgabat
C) Bishkek	D) Astana

Answer & Explanation Answer: B) Ashgabat

Explanation:

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Filed Under: World Geography
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Q:

The perimeter of a square is 22 cm. Find its area (in cm2).

A) 60.5	B) 22.5
C) 45	D) 30.25

Answer & Explanation Answer: D) 30.25

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

Find the G.C.F. & L.C.M. of 20 and 28.

A) 20,280	B) 5,280
C) 10,140	D) 4,140

Answer & Explanation Answer: B) 5,280

Explanation:

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Q:

What is the difference between the compound interests on Rs. 5000 for $1 \frac{1}{2}$ years at 4% per annum compounded yearly and half-yearly?

A) Rs.3.06	B) Rs.2.04
C) Rs.3.65	D) Rs.5.40

Answer & Explanation Answer: B) Rs.2.04

Explanation:

C.I. when interest compounded yearly

$R s . [5000 * (1 + \frac{4}{100}) * (1 + \frac{\frac{1}{2} * 4}{100})]$

$R s . [5000 * \frac{26}{25} * \frac{51}{50}]$

=Rs.5034

C.I. when interest iscompounded half-yearly

$R s . [5000 * {(1 + \frac{2}{100})}^{3}]$

= Rs. 5306.04

Difference = Rs. (5306.04 - 5304) = Rs. 2.04

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Filed Under: Compound Interest
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Q:

Indo-persian style of architecture atained its supreme beauty in the reign of

A) Babur	B) Akbar
C) Jehangir	D) Shah Jehan

Answer & Explanation Answer: D) Shah Jehan

Explanation:

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Filed Under: Indian History

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Q:

Can we use include ("xyz.PHP") two times in a PHP page "index.PHP"?

Answer

Yes we can use include("xyz.php") more than one time in any page. but it create a prob when xyz.php file contain some funtions declaration then error will come for already declared function in this file else not a prob like if you want to show same content two time in page then must incude it two time not a prob

Workspace

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Q:

Maneela, Raghu and Aravind have some jems with each of them. Five times the number of jems with Raghu equals seven times the number of jems with Maneela while five times the number of jems with Maneela equals seven times the number of jems with Aravind. What is the minimum number of jems that can be there with all three of them put together ?

A) 108	B) 107
C) 109	D) 110

Answer & Explanation Answer: C) 109

Explanation:

From given data,

R : M = 5 : 7

M : A = 5 : 7

R : M : A = 25 : 35 : 49

25 + 35 + 49 = 109

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Filed Under: Ratios and Proportions
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