# 72% of the students of a certain class took Biology and 44% took Mathematics. If each student took at least one of Biology or Mathematics and 40 students took both of these subjects, the total number of students in the class is

1.  200

2.  240

3.  250

4.  320

4

320

Explanation :
No Explanation available for this question

# Rs. 1050 are divided among A, B and C in such a way that the share of A is 2/5 of the combined share of B and C. A will get

1.  Rs. 200

2.  Rs. 300

3.  Rs. 320

4.  Rs. 420

4

Rs. 300

Explanation :
No Explanation available for this question

# The sides of a right-angled triangle forming right angle are in the ratio 5:12. If the area of the triangle is 270 cm2, then the length of the hypotenuse is

1.  39 cm

2.  42 cm

3.  45 cm

4.  51 cm

4

39 cm

Explanation :
No Explanation available for this question

# Two numbers are in the ratio 5: 6. If their H.C.F. is 4, then their L.C.M. will be

1.  90

2.  96

3.  120

4.  150

4

120

Explanation :
No Explanation available for this question

# If a + b + c = 1 and ab+bc+ca=1/3 then a b: c is

1.  1:2:2

2.  2:1:2

3.  1:1:1

4.  1:2:1

4

1:1:1

Explanation :
No Explanation available for this question

# A and B enter into partnership with capitals in the ratio 5: 6. At the end of 8 months A withdraws his capital. They received profits in the ratio 5: 9. B invested the capital for

1.  6 months

2.  8 months

3.  10 months

4.  12 months

4

12 months

Explanation :
No Explanation available for this question

# What is the length of the radius of the circum-circle of the equilateral triangle, the length of whose side is 6√3cm

1.  6√5 cm

2.  6 cm

3.  5.4 cm

4.  3√6 cm

4

6 cm

Explanation :
No Explanation available for this question

# If the measures of a diagonal and the area of a rectangle are 25 cm and 168 cm2 respectively, what is the length of the rectangle

1.  31 cm

2.  24 cm

3.  17 cm

4.  7 cm

4

24 cm

Explanation :
No Explanation available for this question

# The number of coins, each of radiuses 0.75 cm and thickness 0.2 cm, to be melted to make a right circular cylinder of height 8 cm and radius 3 cm, is

1.  640

2.  600

3.  500

4.  480

4

640

Explanation :
No Explanation available for this question

1.  16 m

2.  15 m

3.  14 m

4.  13 m

4