230
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

Explanation:

Let the number of correct answers be X.

Number of incorrect answers = (60 – X).

4x – (60 – x) = 130

=> 5x = 190

=> x = 38

Q:

Solve the following :

 A) 3 B) 48 C) 1 D) 1/3

Explanation:

1 6
Q:

The number of solutions of the pair of linear equations x + 2y - 8 = 0 and 2x + 4y = 16 is

 A) 0 B) 1 C) Infinitely many D) 2

Explanation:

2 17
Q:

Solve the following

 A) -6 B) 13 C) 6 D) 15.6

Explanation:

0 9
Q:

If A = (-14 + 4) and B = 4 - 14, then AB =

 A) 0 B) -100 C) 100 D) -1

Explanation:

0 17
Q:

Expand :

 A) S3+3S2+12S+8 B) S3+3S2+6S+8 C) S3+6S2+12S+8 D) S3+6S2+6S+8

Explanation:

3 59
Q:

P + Q = 2(P-Q). If Q = 10, what is the value of P?

 A) 10 B) 40 C) 20 D) 30

Explanation:

1 37
Q:

The value of $tan(-405°)$

 A) 1 B) -1 C) 2 D) 0

Explanation:

0 13
Q:

There are 10 dozen apples, 15 dozen mangoes and 20 dozen oranges for selling. If 1/2, 1/3 and 1/4 of them are sold respectively. How many of the total fruits are remaining?

 A) 420 B) 380 C) 180 D) 360