he Search

Q:

If a - b = 3, $(a^{2} + b^{2}) = 29$ , find the value of ab.

A) 10	B) 12
C) 15	D) 18

Answer & Explanation Answer: A) 10

Explanation:

2ab= $(a^{2} + b^{2}) - (a^{2} - b^{2})$

29-9=20

=>ab=10

Report Error

View Answer Report Error Discuss

Filed Under: Simplification

Q:

The highest score in an inning was 3/11 of the total and the next highest was 3/11 of the reminder . If the score differ by 9, the total score was :

A) 110	B) 121
C) 132	D) 143

Answer & Explanation Answer: B) 121

Explanation:

Let the score be x. Then the highest score = 3x/11.

Reminder = (x - 3x/11) = 8x/11 .Next the highest score = 3/11 of 8x/11 = 24x/121.

3x/11 - 24x/11 = 9 <=> 33x - 24x = 9*121 <=> x= 121..

Report Error

View Answer Report Error Discuss

Filed Under: Simplification

Q:

In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 60 questions and secures 130 marks, the no of questions he attempts correctly is :

A) 35	B) 38
C) 40	D) 42

Answer & Explanation Answer: B) 38

Explanation:

Let the number of correct answers be X.

Number of incorrect answers = (60 – X).

4x – (60 – x) = 130

=> 5x = 190

=> x = 38

Report Error

View Answer Report Error Discuss

Filed Under: Simplification

Q:

In a group of buffaloes and ducks, the number of legs are 24 more than twice the number of heads. What is the number of buffaloes in the group ?

A) 6	B) 10
C) 8	D) 12

Answer & Explanation Answer: D) 12

Explanation:

Let the number of buffaoes be x and number of ducks be y.

Then 4x + 2y = 2(x + y) + 24

=> 2x = 24

=> x = 12.

Report Error

View Answer Report Error Discuss

Filed Under: Simplification

Q:

The International chriminal Police Organisation has its headquaters at

A) Paris	B) Rio de Janeiro
C) Dar es Salam	D) None of these

Answer & Explanation Answer: A) Paris

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: World Organisations

Q:

The office of the UN general Assembly is in

A) Vienna	B) Paris
C) Newyork	D) Zurich

Answer & Explanation Answer: C) Newyork

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: World Organisations

Q:

The year 1995 is the golden Jubilee year of which of the following International Organisations

A) GATT	B) NAM
C) UNO	D) ASEAN

Answer & Explanation Answer: C) UNO

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: World Organisations

Q:

The first Asian Secretary general of U.N.O was

A) Vijaya Laxmi pandit	B) U.Thant
C) Trygve Lie	D) Kurt Waldheum

Answer & Explanation Answer: C) Trygve Lie

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: World Organisations

Searching for "he"

Quick Links