Application of Integers

Q.

Most individuals are familiar with which form of e-commerce?

Q.

An examination has 10 questions. Each correct answer gets 1 mark, and for each wrong answer $\frac{1}{2}$ a mark gets reduced. If Anu got 3 answers right, and 7 answers wrong, what would be her total marks?

1. $\frac{9}{2}$

2. $\frac{1}{2}$

3. $\frac{-1}{8}$

4. $\frac{-1}{2}$

Q.

Prashanthi travels 30 km towards North then takes about turn and then travels south for 55 km. Taking North direction as positive and south direction as negative, find the prashanthi's distance from the initial starting point.

1. 50 km towards the south.

2. 65 km towards the south.

3. 25 km towards the south.

4. 25 km towards the north.

Q. Consider a building with 20 stairs above ground level and 20 stairs below ground level. Considering ground level as zero, if you are standing on the 16^th step below ground level, how will you say it mathematically?

1. You are on the +16^th step.
2. You are on the -16^th step.
3. You are on 8^th step
4. You are on the 4^th step.

Q.

In a test which contains 10 questions, +5 marks, -2 marks and 0 marks are awarded for every correct answer, incorrect answer and unattempted questions respectively. Ram got 3 correct and 4 incorrect out of 7 questions he attempted. What is his final score?

1. -7

2. -2

3. 2

4. 7

Q. Burst the correct bubble.

1. a+b=b+a
2. axb=bxa
3. a/b=b/a
4. a-b=b-a
5. a+(b+c)=(a+b)+c
6. ax(bxc)=(axb)xc
7. a-(b-c)=(a-b)-c
8. ax0=0

Q.

A car travelled 60 km towards the north direction from a point A. From there, it travelled 100 km in the south direction. How far is the car from point A now?

1. 40 km South

2. 40 km North

3. 160 km South

4. 160 km North

Q.

A diver descends 20 feet in the water from the boat at the surface of the lake. He then rose12 feet and descends another 18 feet. At this point, what is his depth in water?

1. -13 feet

2. -17 feet

3. -21 feet

4. -26 feet

Q.

In a class test containing 10 questions, 3 marks are awarded for every correct answer, (-1) mark is awarded for every incorrect answer and 0 for the questions not attempted. Srinu gets two correct and six incorrect answers out of eight questions he attempted. What is his total score?

1. 0

2. 2

3. -2

4. 6

Q.

Niki is playing a game. Each correct answer gets 1 mark, and for each wrong answer $\frac{1}{2}$ a mark gets reduced. If Niki got 1 answer right, and 9 answers wrong, what would be her total marks?

1. $-3\frac{1}{2}$

2. $-6\frac{1}{2}$

3. $-2\frac{1}{2}$

4. $-7\frac{1}{2}$

Q.

Bittu has fever. At 9 A.M, his temperature was 36°C, At 1 AM, his temperature decreased by $2\frac{1}{2}$°C. Find his temperature after the decrease.

1. $33\frac{1}{2}$°C

2. $23\frac{1}{2}$°C

3. $23\frac{1}{2}$°C

4. $30\frac{1}{2}$°C

Q. The temperature at 12 noon was 10${}^{\circ }$C above zero. If it decreases at the rate of 2 ${}^{\circ }$C per hour until midnight, what would be the temperature at 9 p.m.?

1. -8${}^{\circ }$C
2. -6${}^{\circ }$C
3. 8${}^{\circ }$C
4. 6${}^{\circ }$C