NAT IIP Physical Science Quantitative Preparation Online Test for Pakistani Students

(x + y)2= 25 and x2+ y2= 13 then xy is equal to?

• 16 A
• 20 B
• 18 C
• 6 D

The annual decrease in the population of a city was 10% and the present number of inhabitants is 1620. What was the population 2 years hence?

• 20 A
• 400 B
• 2000 C
• 1000 D

Ay - b = c - dy what is 'y' in terms of 'a', 'b' and 'c'?

• 30 A
• 38/2 B
• 38/3 C
• 38/5 D

• 1.425 A
• 1.585 B
• 1.330 C
• 0.750 D
• 1.750 E

1/x = 1/y + 1/z then 'x' in terms of 'y' and 'z' is given by?

• (y + z) / (y-z) A
• yz/(y + z) B
• (y + z)/yz C
• 1/z -1/y D

Ay -b = c -dy what is 'y' in term of 'a', 'b' and 'c'?

• (c + b)/(a + d) A
• (c - b)/(a + d) B
• (c - b)/(a + d) C
• (c + b)/(a - d) D

When 3x2+ 5x + 7 is subtracted from x2+ 8x + 3 the result is?

• 5x2- 3x + 4 A
• 3x- 2x2 - 4 B
• x2+ 8x + 10 C
• 11x2- 3x + 10 D

The average height of a class of 14 boys is 5.3 feet. After new boy is admitted to the class, the new average height now becomes 5.25. What is the height of the new boy?

• 4.55 A
• 5.0 B
• 6.0 C
• 3.5 D

If a2- b2and a - b = 12 then average of 'a' and 'b' is?

• 3 A
• 12 B
• 6 C
• 3/2 D

One half of the employees of Al Karim Co. earn salaries above Rs. 18,000 monthly. One third of the remainder earn salaries between Rs. 15,000 and Rs. 18,000. What part of the staff below Rs. 15,000?

• 2/3 A
• 1/3 B
• 2/5 C
• 3/5 D